Home / 90,772.40-136,158.60-65,694.80

Finding the Fourth Proportional to 90,772.40, 136,158.60 and 65,694.80

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Solution

The fourth proportional to 90,772.40, 136,158.60 and 65,694.80 is: 98,542.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,772.40 : 136,158.60 = 65,694.80 : x
  2. Step 2: Convert to fraction form
    90,772.40/136,158.60 = 65,694.80/x
  3. Step 3: Cross multiply
    90,772.40x = 136,158.60 × 65,694.80
  4. Step 4: Simplify right side
    90,772.40x = 8,944,911,995.28
  5. Step 5: Solve for x
    x = 8,944,911,995.28/90,772.40
  6. Step 6: Final answer
    x = 98,542.20

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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.