Home / 117,515.52-162,132.78-66,523.20

Finding the Fourth Proportional to 117,515.52, 162,132.78 and 66,523.20

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Solution

The fourth proportional to 117,515.52, 162,132.78 and 66,523.20 is: 91,780.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,515.52 : 162,132.78 = 66,523.20 : x
  2. Step 2: Convert to fraction form
    117,515.52/162,132.78 = 66,523.20/x
  3. Step 3: Cross multiply
    117,515.52x = 162,132.78 × 66,523.20
  4. Step 4: Simplify right side
    117,515.52x = 10,785,591,350.50
  5. Step 5: Solve for x
    x = 10,785,591,350.50/117,515.52
  6. Step 6: Final answer
    x = 91,780.14

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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.