Home / 131,469-181,427.22-74,913.18

Finding the Fourth Proportional to 131,469, 181,427.22 and 74,913.18

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Solution

The fourth proportional to 131,469, 181,427.22 and 74,913.18 is: 103,380.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,469 : 181,427.22 = 74,913.18 : x
  2. Step 2: Convert to fraction form
    131,469/181,427.22 = 74,913.18/x
  3. Step 3: Cross multiply
    131,469x = 181,427.22 × 74,913.18
  4. Step 4: Simplify right side
    131,469x = 13,591,289,988.76
  5. Step 5: Solve for x
    x = 13,591,289,988.76/131,469
  6. Step 6: Final answer
    x = 103,380.19

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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.