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Finding the Fourth Proportional to 148,397.20, 205,059.70 and 108,040.91

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Solution

The fourth proportional to 148,397.20, 205,059.70 and 108,040.91 is: 149,294.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,397.20 : 205,059.70 = 108,040.91 : x
  2. Step 2: Convert to fraction form
    148,397.20/205,059.70 = 108,040.91/x
  3. Step 3: Cross multiply
    148,397.20x = 205,059.70 × 108,040.91
  4. Step 4: Simplify right side
    148,397.20x = 22,154,835,702.08
  5. Step 5: Solve for x
    x = 22,154,835,702.08/148,397.20
  6. Step 6: Final answer
    x = 149,294.17

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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.