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Finding the Fourth Proportional to 137,560.40, 206,081.40 and 70,773.20

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Solution

The fourth proportional to 137,560.40, 206,081.40 and 70,773.20 is: 106,026.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,560.40 : 206,081.40 = 70,773.20 : x
  2. Step 2: Convert to fraction form
    137,560.40/206,081.40 = 70,773.20/x
  3. Step 3: Cross multiply
    137,560.40x = 206,081.40 × 70,773.20
  4. Step 4: Simplify right side
    137,560.40x = 14,585,040,138.48
  5. Step 5: Solve for x
    x = 14,585,040,138.48/137,560.40
  6. Step 6: Final answer
    x = 106,026.44

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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.