Home / 125,144.68-172,657.40-71,391.86

Finding the Fourth Proportional to 125,144.68, 172,657.40 and 71,391.86

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Solution

The fourth proportional to 125,144.68, 172,657.40 and 71,391.86 is: 98,496.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,144.68 : 172,657.40 = 71,391.86 : x
  2. Step 2: Convert to fraction form
    125,144.68/172,657.40 = 71,391.86/x
  3. Step 3: Cross multiply
    125,144.68x = 172,657.40 × 71,391.86
  4. Step 4: Simplify right side
    125,144.68x = 12,326,332,928.76
  5. Step 5: Solve for x
    x = 12,326,332,928.76/125,144.68
  6. Step 6: Final answer
    x = 98,496.66

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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.