Home / 78,168,000.20-117,252,000.30-57,760,665.80

Finding the Fourth Proportional to 78,168,000.20, 117,252,000.30 and 57,760,665.80

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Solution

The fourth proportional to 78,168,000.20, 117,252,000.30 and 57,760,665.80 is: 86,640,998.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,168,000.20 : 117,252,000.30 = 57,760,665.80 : x
  2. Step 2: Convert to fraction form
    78,168,000.20/117,252,000.30 = 57,760,665.80/x
  3. Step 3: Cross multiply
    78,168,000.20x = 117,252,000.30 × 57,760,665.80
  4. Step 4: Simplify right side
    78,168,000.20x = 6,772,553,603,709,799
  5. Step 5: Solve for x
    x = 6,772,553,603,709,799/78,168,000.20
  6. Step 6: Final answer
    x = 86,640,998.70

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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.