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Finding the Fourth Proportional to 124,414.80, 186,665.40 and 54,344.40

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Solution

The fourth proportional to 124,414.80, 186,665.40 and 54,344.40 is: 81,535.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,414.80 : 186,665.40 = 54,344.40 : x
  2. Step 2: Convert to fraction form
    124,414.80/186,665.40 = 54,344.40/x
  3. Step 3: Cross multiply
    124,414.80x = 186,665.40 × 54,344.40
  4. Step 4: Simplify right side
    124,414.80x = 10,144,219,163.76
  5. Step 5: Solve for x
    x = 10,144,219,163.76/124,414.80
  6. Step 6: Final answer
    x = 81,535.47

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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.