Home / 129,104.69-178,160.62-71,743.83

Finding the Fourth Proportional to 129,104.69, 178,160.62 and 71,743.83

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Solution

The fourth proportional to 129,104.69, 178,160.62 and 71,743.83 is: 99,004.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,104.69 : 178,160.62 = 71,743.83 : x
  2. Step 2: Convert to fraction form
    129,104.69/178,160.62 = 71,743.83/x
  3. Step 3: Cross multiply
    129,104.69x = 178,160.62 × 71,743.83
  4. Step 4: Simplify right side
    129,104.69x = 12,781,925,233.97
  5. Step 5: Solve for x
    x = 12,781,925,233.97/129,104.69
  6. Step 6: Final answer
    x = 99,004.34

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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.