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Finding the Fourth Proportional to 140,240.87, 194,838.87 and 138,559.35

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Solution

The fourth proportional to 140,240.87, 194,838.87 and 138,559.35 is: 192,502.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,240.87 : 194,838.87 = 138,559.35 : x
  2. Step 2: Convert to fraction form
    140,240.87/194,838.87 = 138,559.35/x
  3. Step 3: Cross multiply
    140,240.87x = 194,838.87 × 138,559.35
  4. Step 4: Simplify right side
    140,240.87x = 26,996,747,181.93
  5. Step 5: Solve for x
    x = 26,996,747,181.93/140,240.87
  6. Step 6: Final answer
    x = 192,502.71

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.