Home / 137,549.31-206,323.97-90,791.25

Finding the Fourth Proportional to 137,549.31, 206,323.97 and 90,791.25

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Solution

The fourth proportional to 137,549.31, 206,323.97 and 90,791.25 is: 136,186.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,549.31 : 206,323.97 = 90,791.25 : x
  2. Step 2: Convert to fraction form
    137,549.31/206,323.97 = 90,791.25/x
  3. Step 3: Cross multiply
    137,549.31x = 206,323.97 × 90,791.25
  4. Step 4: Simplify right side
    137,549.31x = 18,732,411,141.26
  5. Step 5: Solve for x
    x = 18,732,411,141.26/137,549.31
  6. Step 6: Final answer
    x = 136,186.88

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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.