Home / 131,728.68-181,826.46-75,177.72

Finding the Fourth Proportional to 131,728.68, 181,826.46 and 75,177.72

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Solution

The fourth proportional to 131,728.68, 181,826.46 and 75,177.72 is: 103,768.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,728.68 : 181,826.46 = 75,177.72 : x
  2. Step 2: Convert to fraction form
    131,728.68/181,826.46 = 75,177.72/x
  3. Step 3: Cross multiply
    131,728.68x = 181,826.46 × 75,177.72
  4. Step 4: Simplify right side
    131,728.68x = 13,669,298,698.47
  5. Step 5: Solve for x
    x = 13,669,298,698.47/131,728.68
  6. Step 6: Final answer
    x = 103,768.58

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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.