Home / 131,319.42-181,219.68-74,733.90

Finding the Fourth Proportional to 131,319.42, 181,219.68 and 74,733.90

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Solution

The fourth proportional to 131,319.42, 181,219.68 and 74,733.90 is: 103,132.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,319.42 : 181,219.68 = 74,733.90 : x
  2. Step 2: Convert to fraction form
    131,319.42/181,219.68 = 74,733.90/x
  3. Step 3: Cross multiply
    131,319.42x = 181,219.68 × 74,733.90
  4. Step 4: Simplify right side
    131,319.42x = 13,543,253,443.15
  5. Step 5: Solve for x
    x = 13,543,253,443.15/131,319.42
  6. Step 6: Final answer
    x = 103,132.14

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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.