Home / 138,631.26-191,360.16-82,042.50

Finding the Fourth Proportional to 138,631.26, 191,360.16 and 82,042.50

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Solution

The fourth proportional to 138,631.26, 191,360.16 and 82,042.50 is: 113,247.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,631.26 : 191,360.16 = 82,042.50 : x
  2. Step 2: Convert to fraction form
    138,631.26/191,360.16 = 82,042.50/x
  3. Step 3: Cross multiply
    138,631.26x = 191,360.16 × 82,042.50
  4. Step 4: Simplify right side
    138,631.26x = 15,699,665,926.80
  5. Step 5: Solve for x
    x = 15,699,665,926.80/138,631.26
  6. Step 6: Final answer
    x = 113,247.66

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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.