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Finding the Fourth Proportional to 124,869.80, 187,304.70 and 82,879.40

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Solution

The fourth proportional to 124,869.80, 187,304.70 and 82,879.40 is: 124,319.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,869.80 : 187,304.70 = 82,879.40 : x
  2. Step 2: Convert to fraction form
    124,869.80/187,304.70 = 82,879.40/x
  3. Step 3: Cross multiply
    124,869.80x = 187,304.70 × 82,879.40
  4. Step 4: Simplify right side
    124,869.80x = 15,523,701,153.18
  5. Step 5: Solve for x
    x = 15,523,701,153.18/124,869.80
  6. Step 6: Final answer
    x = 124,319.10

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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.