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Finding the Fourth Proportional to 138,234.12, 207,230.20 and 114,737.12

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Solution

The fourth proportional to 138,234.12, 207,230.20 and 114,737.12 is: 172,005.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,234.12 : 207,230.20 = 114,737.12 : x
  2. Step 2: Convert to fraction form
    138,234.12/207,230.20 = 114,737.12/x
  3. Step 3: Cross multiply
    138,234.12x = 207,230.20 × 114,737.12
  4. Step 4: Simplify right side
    138,234.12x = 23,776,996,325.02
  5. Step 5: Solve for x
    x = 23,776,996,325.02/138,234.12
  6. Step 6: Final answer
    x = 172,005.26

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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.