Home / 90,782.20-136,058.10-80,414.20

Finding the Fourth Proportional to 90,782.20, 136,058.10 and 80,414.20

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Solution

The fourth proportional to 90,782.20, 136,058.10 and 80,414.20 is: 120,519.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,782.20 : 136,058.10 = 80,414.20 : x
  2. Step 2: Convert to fraction form
    90,782.20/136,058.10 = 80,414.20/x
  3. Step 3: Cross multiply
    90,782.20x = 136,058.10 × 80,414.20
  4. Step 4: Simplify right side
    90,782.20x = 10,941,003,265.02
  5. Step 5: Solve for x
    x = 10,941,003,265.02/90,782.20
  6. Step 6: Final answer
    x = 120,519.26

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1.5x scale

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.