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Finding the Fourth Proportional to 147,089.68, 220,480.92 and 72,106

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Solution

The fourth proportional to 147,089.68, 220,480.92 and 72,106 is: 108,083.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,089.68 : 220,480.92 = 72,106 : x
  2. Step 2: Convert to fraction form
    147,089.68/220,480.92 = 72,106/x
  3. Step 3: Cross multiply
    147,089.68x = 220,480.92 × 72,106
  4. Step 4: Simplify right side
    147,089.68x = 15,897,997,217.52
  5. Step 5: Solve for x
    x = 15,897,997,217.52/147,089.68
  6. Step 6: Final answer
    x = 108,083.70

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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.