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Finding the Fourth Proportional to 124,429.60, 186,687.60 and 54,330.40

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Solution

The fourth proportional to 124,429.60, 186,687.60 and 54,330.40 is: 81,514.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,429.60 : 186,687.60 = 54,330.40 : x
  2. Step 2: Convert to fraction form
    124,429.60/186,687.60 = 54,330.40/x
  3. Step 3: Cross multiply
    124,429.60x = 186,687.60 × 54,330.40
  4. Step 4: Simplify right side
    124,429.60x = 10,142,811,983.04
  5. Step 5: Solve for x
    x = 10,142,811,983.04/124,429.60
  6. Step 6: Final answer
    x = 81,514.46

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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.