Home / 131,520.20-181,515.65-74,171.31

Finding the Fourth Proportional to 131,520.20, 181,515.65 and 74,171.31

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Solution

The fourth proportional to 131,520.20, 181,515.65 and 74,171.31 is: 102,366.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,520.20 : 181,515.65 = 74,171.31 : x
  2. Step 2: Convert to fraction form
    131,520.20/181,515.65 = 74,171.31/x
  3. Step 3: Cross multiply
    131,520.20x = 181,515.65 × 74,171.31
  4. Step 4: Simplify right side
    131,520.20x = 13,463,253,175.14
  5. Step 5: Solve for x
    x = 13,463,253,175.14/131,520.20
  6. Step 6: Final answer
    x = 102,366.43

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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.