Home / 137,382.08-206,132.40-74,189.61

Finding the Fourth Proportional to 137,382.08, 206,132.40 and 74,189.61

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Solution

The fourth proportional to 137,382.08, 206,132.40 and 74,189.61 is: 111,316.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,382.08 : 206,132.40 = 74,189.61 : x
  2. Step 2: Convert to fraction form
    137,382.08/206,132.40 = 74,189.61/x
  3. Step 3: Cross multiply
    137,382.08x = 206,132.40 × 74,189.61
  4. Step 4: Simplify right side
    137,382.08x = 15,292,882,364.36
  5. Step 5: Solve for x
    x = 15,292,882,364.36/137,382.08
  6. Step 6: Final answer
    x = 111,316.43

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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.