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Finding the Fourth Proportional to 147,414.80, 220,859.76 and 68,391.20

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Solution

The fourth proportional to 147,414.80, 220,859.76 and 68,391.20 is: 102,465.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,414.80 : 220,859.76 = 68,391.20 : x
  2. Step 2: Convert to fraction form
    147,414.80/220,859.76 = 68,391.20/x
  3. Step 3: Cross multiply
    147,414.80x = 220,859.76 × 68,391.20
  4. Step 4: Simplify right side
    147,414.80x = 15,104,864,018.11
  5. Step 5: Solve for x
    x = 15,104,864,018.11/147,414.80
  6. Step 6: Final answer
    x = 102,465.04

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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.