Home / 131,701.68-181,789.20-75,150.72

Finding the Fourth Proportional to 131,701.68, 181,789.20 and 75,150.72

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Solution

The fourth proportional to 131,701.68, 181,789.20 and 75,150.72 is: 103,731.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,701.68 : 181,789.20 = 75,150.72 : x
  2. Step 2: Convert to fraction form
    131,701.68/181,789.20 = 75,150.72/x
  3. Step 3: Cross multiply
    131,701.68x = 181,789.20 × 75,150.72
  4. Step 4: Simplify right side
    131,701.68x = 13,661,589,268.22
  5. Step 5: Solve for x
    x = 13,661,589,268.22/131,701.68
  6. Step 6: Final answer
    x = 103,731.32

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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.