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Finding the Fourth Proportional to 149,732.70, 206,648.79 and 86,073.18

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Solution

The fourth proportional to 149,732.70, 206,648.79 and 86,073.18 is: 118,791.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,732.70 : 206,648.79 = 86,073.18 : x
  2. Step 2: Convert to fraction form
    149,732.70/206,648.79 = 86,073.18/x
  3. Step 3: Cross multiply
    149,732.70x = 206,648.79 × 86,073.18
  4. Step 4: Simplify right side
    149,732.70x = 17,786,918,498.45
  5. Step 5: Solve for x
    x = 17,786,918,498.45/149,732.70
  6. Step 6: Final answer
    x = 118,791.14

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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.