Home / 124,077,805.20-171,115,904.16-77,672,289.60

Finding the Fourth Proportional to 124,077,805.20, 171,115,904.16 and 77,672,289.60

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Solution

The fourth proportional to 124,077,805.20, 171,115,904.16 and 77,672,289.60 is: 107,117,981.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,077,805.20 : 171,115,904.16 = 77,672,289.60 : x
  2. Step 2: Convert to fraction form
    124,077,805.20/171,115,904.16 = 77,672,289.60/x
  3. Step 3: Cross multiply
    124,077,805.20x = 171,115,904.16 × 77,672,289.60
  4. Step 4: Simplify right side
    124,077,805.20x = 13,290,964,063,081,364
  5. Step 5: Solve for x
    x = 13,290,964,063,081,364/124,077,805.20
  6. Step 6: Final answer
    x = 107,117,981.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.