Home / 125,861.56-173,689.38-72,149.80

Finding the Fourth Proportional to 125,861.56, 173,689.38 and 72,149.80

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Solution

The fourth proportional to 125,861.56, 173,689.38 and 72,149.80 is: 99,566.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,861.56 : 173,689.38 = 72,149.80 : x
  2. Step 2: Convert to fraction form
    125,861.56/173,689.38 = 72,149.80/x
  3. Step 3: Cross multiply
    125,861.56x = 173,689.38 × 72,149.80
  4. Step 4: Simplify right side
    125,861.56x = 12,531,654,029.12
  5. Step 5: Solve for x
    x = 12,531,654,029.12/125,861.56
  6. Step 6: Final answer
    x = 99,566.97

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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.