Home / 78,753,613.20-118,130,419.80-71,573,254.80

Finding the Fourth Proportional to 78,753,613.20, 118,130,419.80 and 71,573,254.80

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Solution

The fourth proportional to 78,753,613.20, 118,130,419.80 and 71,573,254.80 is: 107,359,882.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,753,613.20 : 118,130,419.80 = 71,573,254.80 : x
  2. Step 2: Convert to fraction form
    78,753,613.20/118,130,419.80 = 71,573,254.80/x
  3. Step 3: Cross multiply
    78,753,613.20x = 118,130,419.80 × 71,573,254.80
  4. Step 4: Simplify right side
    78,753,613.20x = 8,454,978,635,976,364
  5. Step 5: Solve for x
    x = 8,454,978,635,976,364/78,753,613.20
  6. Step 6: Final answer
    x = 107,359,882.20

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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.