Home / 131,326.92-181,231.22-74,738.30

Finding the Fourth Proportional to 131,326.92, 181,231.22 and 74,738.30

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Solution

The fourth proportional to 131,326.92, 181,231.22 and 74,738.30 is: 103,138.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,326.92 : 181,231.22 = 74,738.30 : x
  2. Step 2: Convert to fraction form
    131,326.92/181,231.22 = 74,738.30/x
  3. Step 3: Cross multiply
    131,326.92x = 181,231.22 × 74,738.30
  4. Step 4: Simplify right side
    131,326.92x = 13,544,912,570.42
  5. Step 5: Solve for x
    x = 13,544,912,570.42/131,326.92
  6. Step 6: Final answer
    x = 103,138.89

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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.