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Finding the Fourth Proportional to 146,737.10, 220,105.65 and 137,989.10

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Solution

The fourth proportional to 146,737.10, 220,105.65 and 137,989.10 is: 206,983.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,737.10 : 220,105.65 = 137,989.10 : x
  2. Step 2: Convert to fraction form
    146,737.10/220,105.65 = 137,989.10/x
  3. Step 3: Cross multiply
    146,737.10x = 220,105.65 × 137,989.10
  4. Step 4: Simplify right side
    146,737.10x = 30,372,180,548.42
  5. Step 5: Solve for x
    x = 30,372,180,548.42/146,737.10
  6. Step 6: Final answer
    x = 206,983.65

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1.5x scale

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.