Home / 90,032.20-135,048.30-88,649.80

Finding the Fourth Proportional to 90,032.20, 135,048.30 and 88,649.80

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Solution

The fourth proportional to 90,032.20, 135,048.30 and 88,649.80 is: 132,974.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,032.20 : 135,048.30 = 88,649.80 : x
  2. Step 2: Convert to fraction form
    90,032.20/135,048.30 = 88,649.80/x
  3. Step 3: Cross multiply
    90,032.20x = 135,048.30 × 88,649.80
  4. Step 4: Simplify right side
    90,032.20x = 11,972,004,785.34
  5. Step 5: Solve for x
    x = 11,972,004,785.34/90,032.20
  6. Step 6: Final answer
    x = 132,974.70

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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.