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Finding the Fourth Proportional to 147,940.70, 221,781.45 and 88,799.90

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Solution

The fourth proportional to 147,940.70, 221,781.45 and 88,799.90 is: 133,122.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,940.70 : 221,781.45 = 88,799.90 : x
  2. Step 2: Convert to fraction form
    147,940.70/221,781.45 = 88,799.90/x
  3. Step 3: Cross multiply
    147,940.70x = 221,781.45 × 88,799.90
  4. Step 4: Simplify right side
    147,940.70x = 19,694,170,581.86
  5. Step 5: Solve for x
    x = 19,694,170,581.86/147,940.70
  6. Step 6: Final answer
    x = 133,122.06

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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.