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Finding the Fourth Proportional to 138,571.77, 207,702.12 and 68,500.29

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Solution

The fourth proportional to 138,571.77, 207,702.12 and 68,500.29 is: 102,673.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,571.77 : 207,702.12 = 68,500.29 : x
  2. Step 2: Convert to fraction form
    138,571.77/207,702.12 = 68,500.29/x
  3. Step 3: Cross multiply
    138,571.77x = 207,702.12 × 68,500.29
  4. Step 4: Simplify right side
    138,571.77x = 14,227,655,453.61
  5. Step 5: Solve for x
    x = 14,227,655,453.61/138,571.77
  6. Step 6: Final answer
    x = 102,673.55

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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.