Home / 129,445,694.76-178,635,051.90-69,906,985.86

Finding the Fourth Proportional to 129,445,694.76, 178,635,051.90 and 69,906,985.86

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Solution

The fourth proportional to 129,445,694.76, 178,635,051.90 and 69,906,985.86 is: 96,471,636.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,445,694.76 : 178,635,051.90 = 69,906,985.86 : x
  2. Step 2: Convert to fraction form
    129,445,694.76/178,635,051.90 = 69,906,985.86/x
  3. Step 3: Cross multiply
    129,445,694.76x = 178,635,051.90 × 69,906,985.86
  4. Step 4: Simplify right side
    129,445,694.76x = 12,487,838,047,273,666
  5. Step 5: Solve for x
    x = 12,487,838,047,273,666/129,445,694.76
  6. Step 6: Final answer
    x = 96,471,636.78

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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.