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Finding the Fourth Proportional to 149,671.38, 206,548.41 and 88,419.57

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Solution

The fourth proportional to 149,671.38, 206,548.41 and 88,419.57 is: 122,020.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,671.38 : 206,548.41 = 88,419.57 : x
  2. Step 2: Convert to fraction form
    149,671.38/206,548.41 = 88,419.57/x
  3. Step 3: Cross multiply
    149,671.38x = 206,548.41 × 88,419.57
  4. Step 4: Simplify right side
    149,671.38x = 18,262,921,596.38
  5. Step 5: Solve for x
    x = 18,262,921,596.38/149,671.38
  6. Step 6: Final answer
    x = 122,020.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.