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Finding the Fourth Proportional to 121,446.60, 182,126.70 and 54,918.60

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Solution

The fourth proportional to 121,446.60, 182,126.70 and 54,918.60 is: 82,358.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,446.60 : 182,126.70 = 54,918.60 : x
  2. Step 2: Convert to fraction form
    121,446.60/182,126.70 = 54,918.60/x
  3. Step 3: Cross multiply
    121,446.60x = 182,126.70 × 54,918.60
  4. Step 4: Simplify right side
    121,446.60x = 10,002,143,386.62
  5. Step 5: Solve for x
    x = 10,002,143,386.62/121,446.60
  6. Step 6: Final answer
    x = 82,358.36

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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.