Home / 125,145.38-172,713.01-71,438.47

Finding the Fourth Proportional to 125,145.38, 172,713.01 and 71,438.47

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Solution

The fourth proportional to 125,145.38, 172,713.01 and 71,438.47 is: 98,592.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,145.38 : 172,713.01 = 71,438.47 : x
  2. Step 2: Convert to fraction form
    125,145.38/172,713.01 = 71,438.47/x
  3. Step 3: Cross multiply
    125,145.38x = 172,713.01 × 71,438.47
  4. Step 4: Simplify right side
    125,145.38x = 12,338,353,354.74
  5. Step 5: Solve for x
    x = 12,338,353,354.74/125,145.38
  6. Step 6: Final answer
    x = 98,592.16

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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.