Home / 90,650.20-136,121.10-65,864.20

Finding the Fourth Proportional to 90,650.20, 136,121.10 and 65,864.20

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Solution

The fourth proportional to 90,650.20, 136,121.10 and 65,864.20 is: 98,902.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,650.20 : 136,121.10 = 65,864.20 : x
  2. Step 2: Convert to fraction form
    90,650.20/136,121.10 = 65,864.20/x
  3. Step 3: Cross multiply
    90,650.20x = 136,121.10 × 65,864.20
  4. Step 4: Simplify right side
    90,650.20x = 8,965,507,354.62
  5. Step 5: Solve for x
    x = 8,965,507,354.62/90,650.20
  6. Step 6: Final answer
    x = 98,902.23

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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.