Home / 129,445,687.26-178,635,041.55-69,906,978.36

Finding the Fourth Proportional to 129,445,687.26, 178,635,041.55 and 69,906,978.36

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Solution

The fourth proportional to 129,445,687.26, 178,635,041.55 and 69,906,978.36 is: 96,471,626.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,445,687.26 : 178,635,041.55 = 69,906,978.36 : x
  2. Step 2: Convert to fraction form
    129,445,687.26/178,635,041.55 = 69,906,978.36/x
  3. Step 3: Cross multiply
    129,445,687.26x = 178,635,041.55 × 69,906,978.36
  4. Step 4: Simplify right side
    129,445,687.26x = 12,487,835,983,973,552
  5. Step 5: Solve for x
    x = 12,487,835,983,973,552/129,445,687.26
  6. Step 6: Final answer
    x = 96,471,626.43

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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.