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Finding the Fourth Proportional to 146,768.70, 220,153.05 and 84,387.90

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Solution

The fourth proportional to 146,768.70, 220,153.05 and 84,387.90 is: 126,581.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,768.70 : 220,153.05 = 84,387.90 : x
  2. Step 2: Convert to fraction form
    146,768.70/220,153.05 = 84,387.90/x
  3. Step 3: Cross multiply
    146,768.70x = 220,153.05 × 84,387.90
  4. Step 4: Simplify right side
    146,768.70x = 18,578,253,568.10
  5. Step 5: Solve for x
    x = 18,578,253,568.10/146,768.70
  6. Step 6: Final answer
    x = 126,581.85

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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.