Home / 129,445,695.76-178,635,053.28-69,906,986.86

Finding the Fourth Proportional to 129,445,695.76, 178,635,053.28 and 69,906,986.86

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Solution

The fourth proportional to 129,445,695.76, 178,635,053.28 and 69,906,986.86 is: 96,471,638.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,445,695.76 : 178,635,053.28 = 69,906,986.86 : x
  2. Step 2: Convert to fraction form
    129,445,695.76/178,635,053.28 = 69,906,986.86/x
  3. Step 3: Cross multiply
    129,445,695.76x = 178,635,053.28 × 69,906,986.86
  4. Step 4: Simplify right side
    129,445,695.76x = 12,487,838,322,380,360
  5. Step 5: Solve for x
    x = 12,487,838,322,380,360/129,445,695.76
  6. Step 6: Final answer
    x = 96,471,638.16

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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.