Home / 8,138,775,883.20-12,208,163,824.80-8,069,901,129.60

Finding the Fourth Proportional to 8,138,775,883.20, 12,208,163,824.80 and 8,069,901,129.60

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Solution

The fourth proportional to 8,138,775,883.20, 12,208,163,824.80 and 8,069,901,129.60 is: 12,104,851,694.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138,775,883.20 : 12,208,163,824.80 = 8,069,901,129.60 : x
  2. Step 2: Convert to fraction form
    8,138,775,883.20/12,208,163,824.80 = 8,069,901,129.60/x
  3. Step 3: Cross multiply
    8,138,775,883.20x = 12,208,163,824.80 × 8,069,901,129.60
  4. Step 4: Simplify right side
    8,138,775,883.20x = 98,518,675,040,095,371,264
  5. Step 5: Solve for x
    x = 98,518,675,040,095,371,264/8,138,775,883.20
  6. Step 6: Final answer
    x = 12,104,851,694.40

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.