Home / 129,305.01-178,443.09-71,948.91

Finding the Fourth Proportional to 129,305.01, 178,443.09 and 71,948.91

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Solution

The fourth proportional to 129,305.01, 178,443.09 and 71,948.91 is: 99,290.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,305.01 : 178,443.09 = 71,948.91 : x
  2. Step 2: Convert to fraction form
    129,305.01/178,443.09 = 71,948.91/x
  3. Step 3: Cross multiply
    129,305.01x = 178,443.09 × 71,948.91
  4. Step 4: Simplify right side
    129,305.01x = 12,838,785,822.53
  5. Step 5: Solve for x
    x = 12,838,785,822.53/129,305.01
  6. Step 6: Final answer
    x = 99,290.71

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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.