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Finding the Fourth Proportional to 124,042.80, 186,064.20 and 115,294.80

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Solution

The fourth proportional to 124,042.80, 186,064.20 and 115,294.80 is: 172,942.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,042.80 : 186,064.20 = 115,294.80 : x
  2. Step 2: Convert to fraction form
    124,042.80/186,064.20 = 115,294.80/x
  3. Step 3: Cross multiply
    124,042.80x = 186,064.20 × 115,294.80
  4. Step 4: Simplify right side
    124,042.80x = 21,452,234,726.16
  5. Step 5: Solve for x
    x = 21,452,234,726.16/124,042.80
  6. Step 6: Final answer
    x = 172,942.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.