Home / 90,225.20-135,078.60-55,233.20

Finding the Fourth Proportional to 90,225.20, 135,078.60 and 55,233.20

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Solution

The fourth proportional to 90,225.20, 135,078.60 and 55,233.20 is: 82,691.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,225.20 : 135,078.60 = 55,233.20 : x
  2. Step 2: Convert to fraction form
    90,225.20/135,078.60 = 55,233.20/x
  3. Step 3: Cross multiply
    90,225.20x = 135,078.60 × 55,233.20
  4. Step 4: Simplify right side
    90,225.20x = 7,460,823,329.52
  5. Step 5: Solve for x
    x = 7,460,823,329.52/90,225.20
  6. Step 6: Final answer
    x = 82,691.13

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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.