Home / 111,531.20-167,149.13-81,809.87

Finding the Fourth Proportional to 111,531.20, 167,149.13 and 81,809.87

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Solution

The fourth proportional to 111,531.20, 167,149.13 and 81,809.87 is: 122,606.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,531.20 : 167,149.13 = 81,809.87 : x
  2. Step 2: Convert to fraction form
    111,531.20/167,149.13 = 81,809.87/x
  3. Step 3: Cross multiply
    111,531.20x = 167,149.13 × 81,809.87
  4. Step 4: Simplify right side
    111,531.20x = 13,674,447,351.12
  5. Step 5: Solve for x
    x = 13,674,447,351.12/111,531.20
  6. Step 6: Final answer
    x = 122,606.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.