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Finding the Fourth Proportional to 138,671.22, 208,101.87 and 49,925.46

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Solution

The fourth proportional to 138,671.22, 208,101.87 and 49,925.46 is: 74,922.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,671.22 : 208,101.87 = 49,925.46 : x
  2. Step 2: Convert to fraction form
    138,671.22/208,101.87 = 49,925.46/x
  3. Step 3: Cross multiply
    138,671.22x = 208,101.87 × 49,925.46
  4. Step 4: Simplify right side
    138,671.22x = 10,389,581,586.61
  5. Step 5: Solve for x
    x = 10,389,581,586.61/138,671.22
  6. Step 6: Final answer
    x = 74,922.41

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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.