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Finding the Fourth Proportional to 101,581.20, 152,026.20 and 89,139.60

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Solution

The fourth proportional to 101,581.20, 152,026.20 and 89,139.60 is: 133,406.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,581.20 : 152,026.20 = 89,139.60 : x
  2. Step 2: Convert to fraction form
    101,581.20/152,026.20 = 89,139.60/x
  3. Step 3: Cross multiply
    101,581.20x = 152,026.20 × 89,139.60
  4. Step 4: Simplify right side
    101,581.20x = 13,551,554,657.52
  5. Step 5: Solve for x
    x = 13,551,554,657.52/101,581.20
  6. Step 6: Final answer
    x = 133,406.13

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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.