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Finding the Fourth Proportional to 149,117.60, 205,780.68 and 88,686.90

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Solution

The fourth proportional to 149,117.60, 205,780.68 and 88,686.90 is: 122,386.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,117.60 : 205,780.68 = 88,686.90 : x
  2. Step 2: Convert to fraction form
    149,117.60/205,780.68 = 88,686.90/x
  3. Step 3: Cross multiply
    149,117.60x = 205,780.68 × 88,686.90
  4. Step 4: Simplify right side
    149,117.60x = 18,250,050,589.09
  5. Step 5: Solve for x
    x = 18,250,050,589.09/149,117.60
  6. Step 6: Final answer
    x = 122,386.97

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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.