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Finding the Fourth Proportional to 147,040.20, 220,706.10 and 72,244.80

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Solution

The fourth proportional to 147,040.20, 220,706.10 and 72,244.80 is: 108,438.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,040.20 : 220,706.10 = 72,244.80 : x
  2. Step 2: Convert to fraction form
    147,040.20/220,706.10 = 72,244.80/x
  3. Step 3: Cross multiply
    147,040.20x = 220,706.10 × 72,244.80
  4. Step 4: Simplify right side
    147,040.20x = 15,944,868,053.28
  5. Step 5: Solve for x
    x = 15,944,868,053.28/147,040.20
  6. Step 6: Final answer
    x = 108,438.84

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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.