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Finding the Fourth Proportional to 124,279.80, 186,419.70 and 54,295.80

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Solution

The fourth proportional to 124,279.80, 186,419.70 and 54,295.80 is: 81,443.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,279.80 : 186,419.70 = 54,295.80 : x
  2. Step 2: Convert to fraction form
    124,279.80/186,419.70 = 54,295.80/x
  3. Step 3: Cross multiply
    124,279.80x = 186,419.70 × 54,295.80
  4. Step 4: Simplify right side
    124,279.80x = 10,121,806,747.26
  5. Step 5: Solve for x
    x = 10,121,806,747.26/124,279.80
  6. Step 6: Final answer
    x = 81,443.70

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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.