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Finding the Fourth Proportional to 138,248.40, 207,320.76 and 59,322

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Solution

The fourth proportional to 138,248.40, 207,320.76 and 59,322 is: 88,960.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,248.40 : 207,320.76 = 59,322 : x
  2. Step 2: Convert to fraction form
    138,248.40/207,320.76 = 59,322/x
  3. Step 3: Cross multiply
    138,248.40x = 207,320.76 × 59,322
  4. Step 4: Simplify right side
    138,248.40x = 12,298,682,124.72
  5. Step 5: Solve for x
    x = 12,298,682,124.72/138,248.40
  6. Step 6: Final answer
    x = 88,960.76

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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.