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Finding the Fourth Proportional to 124,213.20, 186,101.10 and 101,905.80

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Solution

The fourth proportional to 124,213.20, 186,101.10 and 101,905.80 is: 152,679.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,213.20 : 186,101.10 = 101,905.80 : x
  2. Step 2: Convert to fraction form
    124,213.20/186,101.10 = 101,905.80/x
  3. Step 3: Cross multiply
    124,213.20x = 186,101.10 × 101,905.80
  4. Step 4: Simplify right side
    124,213.20x = 18,964,781,476.38
  5. Step 5: Solve for x
    x = 18,964,781,476.38/124,213.20
  6. Step 6: Final answer
    x = 152,679.28

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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.