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Finding the Fourth Proportional to 159,948.48, 220,736 and 91,987.52

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Solution

The fourth proportional to 159,948.48, 220,736 and 91,987.52 is: 126,946.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,948.48 : 220,736 = 91,987.52 : x
  2. Step 2: Convert to fraction form
    159,948.48/220,736 = 91,987.52/x
  3. Step 3: Cross multiply
    159,948.48x = 220,736 × 91,987.52
  4. Step 4: Simplify right side
    159,948.48x = 20,304,957,214.72
  5. Step 5: Solve for x
    x = 20,304,957,214.72/159,948.48
  6. Step 6: Final answer
    x = 126,946.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.