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Finding the Fourth Proportional to 146,791.29, 220,239.41 and 90,565.95

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Solution

The fourth proportional to 146,791.29, 220,239.41 and 90,565.95 is: 135,881.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,791.29 : 220,239.41 = 90,565.95 : x
  2. Step 2: Convert to fraction form
    146,791.29/220,239.41 = 90,565.95/x
  3. Step 3: Cross multiply
    146,791.29x = 220,239.41 × 90,565.95
  4. Step 4: Simplify right side
    146,791.29x = 19,946,190,528.31
  5. Step 5: Solve for x
    x = 19,946,190,528.31/146,791.29
  6. Step 6: Final answer
    x = 135,881.30

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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.