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Finding the Fourth Proportional to 138,482.92, 207,692.22 and 54,244.84

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Solution

The fourth proportional to 138,482.92, 207,692.22 and 54,244.84 is: 81,354.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,482.92 : 207,692.22 = 54,244.84 : x
  2. Step 2: Convert to fraction form
    138,482.92/207,692.22 = 54,244.84/x
  3. Step 3: Cross multiply
    138,482.92x = 207,692.22 × 54,244.84
  4. Step 4: Simplify right side
    138,482.92x = 11,266,231,243.14
  5. Step 5: Solve for x
    x = 11,266,231,243.14/138,482.92
  6. Step 6: Final answer
    x = 81,354.66

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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.