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Finding the Fourth Proportional to 140,687, 211,082.34 and 74,124.44

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Solution

The fourth proportional to 140,687, 211,082.34 and 74,124.44 is: 111,213.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,687 : 211,082.34 = 74,124.44 : x
  2. Step 2: Convert to fraction form
    140,687/211,082.34 = 74,124.44/x
  3. Step 3: Cross multiply
    140,687x = 211,082.34 × 74,124.44
  4. Step 4: Simplify right side
    140,687x = 15,646,360,246.39
  5. Step 5: Solve for x
    x = 15,646,360,246.39/140,687
  6. Step 6: Final answer
    x = 111,213.97

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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.