Home / 125,140.68-172,651.88-71,387.86

Finding the Fourth Proportional to 125,140.68, 172,651.88 and 71,387.86

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Solution

The fourth proportional to 125,140.68, 172,651.88 and 71,387.86 is: 98,491.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,140.68 : 172,651.88 = 71,387.86 : x
  2. Step 2: Convert to fraction form
    125,140.68/172,651.88 = 71,387.86/x
  3. Step 3: Cross multiply
    125,140.68x = 172,651.88 × 71,387.86
  4. Step 4: Simplify right side
    125,140.68x = 12,325,248,238.18
  5. Step 5: Solve for x
    x = 12,325,248,238.18/125,140.68
  6. Step 6: Final answer
    x = 98,491.14

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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.