Home / 125,146.38-172,714.39-71,439.47

Finding the Fourth Proportional to 125,146.38, 172,714.39 and 71,439.47

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Solution

The fourth proportional to 125,146.38, 172,714.39 and 71,439.47 is: 98,593.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,146.38 : 172,714.39 = 71,439.47 : x
  2. Step 2: Convert to fraction form
    125,146.38/172,714.39 = 71,439.47/x
  3. Step 3: Cross multiply
    125,146.38x = 172,714.39 × 71,439.47
  4. Step 4: Simplify right side
    125,146.38x = 12,338,624,482.97
  5. Step 5: Solve for x
    x = 12,338,624,482.97/125,146.38
  6. Step 6: Final answer
    x = 98,593.54

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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.