Home / 129,462.01-178,631.99-81,780.73

Finding the Fourth Proportional to 129,462.01, 178,631.99 and 81,780.73

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Solution

The fourth proportional to 129,462.01, 178,631.99 and 81,780.73 is: 112,841.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,462.01 : 178,631.99 = 81,780.73 : x
  2. Step 2: Convert to fraction form
    129,462.01/178,631.99 = 81,780.73/x
  3. Step 3: Cross multiply
    129,462.01x = 178,631.99 × 81,780.73
  4. Step 4: Simplify right side
    129,462.01x = 14,608,654,543.55
  5. Step 5: Solve for x
    x = 14,608,654,543.55/129,462.01
  6. Step 6: Final answer
    x = 112,841.25

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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.