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Finding the Fourth Proportional to 138,856.56, 208,241.76 and 50,098.56

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Solution

The fourth proportional to 138,856.56, 208,241.76 and 50,098.56 is: 75,132.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,856.56 : 208,241.76 = 50,098.56 : x
  2. Step 2: Convert to fraction form
    138,856.56/208,241.76 = 50,098.56/x
  3. Step 3: Cross multiply
    138,856.56x = 208,241.76 × 50,098.56
  4. Step 4: Simplify right side
    138,856.56x = 10,432,612,307.87
  5. Step 5: Solve for x
    x = 10,432,612,307.87/138,856.56
  6. Step 6: Final answer
    x = 75,132.30

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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.