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Finding the Fourth Proportional to 124,882.80, 172,338.20 and 68,294.20

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Solution

The fourth proportional to 124,882.80, 172,338.20 and 68,294.20 is: 94,245.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,882.80 : 172,338.20 = 68,294.20 : x
  2. Step 2: Convert to fraction form
    124,882.80/172,338.20 = 68,294.20/x
  3. Step 3: Cross multiply
    124,882.80x = 172,338.20 × 68,294.20
  4. Step 4: Simplify right side
    124,882.80x = 11,769,699,498.44
  5. Step 5: Solve for x
    x = 11,769,699,498.44/124,882.80
  6. Step 6: Final answer
    x = 94,245.96

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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.