Home / 135,235.20-186,623.46-74,805.66

Finding the Fourth Proportional to 135,235.20, 186,623.46 and 74,805.66

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Solution

The fourth proportional to 135,235.20, 186,623.46 and 74,805.66 is: 103,231.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,235.20 : 186,623.46 = 74,805.66 : x
  2. Step 2: Convert to fraction form
    135,235.20/186,623.46 = 74,805.66/x
  3. Step 3: Cross multiply
    135,235.20x = 186,623.46 × 74,805.66
  4. Step 4: Simplify right side
    135,235.20x = 13,960,491,096.78
  5. Step 5: Solve for x
    x = 13,960,491,096.78/135,235.20
  6. Step 6: Final answer
    x = 103,231.19

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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.