Home / 125,691.39-173,491.51-72,012.15

Finding the Fourth Proportional to 125,691.39, 173,491.51 and 72,012.15

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Solution

The fourth proportional to 125,691.39, 173,491.51 and 72,012.15 is: 99,398.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,691.39 : 173,491.51 = 72,012.15 : x
  2. Step 2: Convert to fraction form
    125,691.39/173,491.51 = 72,012.15/x
  3. Step 3: Cross multiply
    125,691.39x = 173,491.51 × 72,012.15
  4. Step 4: Simplify right side
    125,691.39x = 12,493,496,641.85
  5. Step 5: Solve for x
    x = 12,493,496,641.85/125,691.39
  6. Step 6: Final answer
    x = 99,398.19

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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.