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Finding the Fourth Proportional to 137,549.06, 206,323.58 and 90,791

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Solution

The fourth proportional to 137,549.06, 206,323.58 and 90,791 is: 136,186.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,549.06 : 206,323.58 = 90,791 : x
  2. Step 2: Convert to fraction form
    137,549.06/206,323.58 = 90,791/x
  3. Step 3: Cross multiply
    137,549.06x = 206,323.58 × 90,791
  4. Step 4: Simplify right side
    137,549.06x = 18,732,324,151.78
  5. Step 5: Solve for x
    x = 18,732,324,151.78/137,549.06
  6. Step 6: Final answer
    x = 136,186.49

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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.