Home / 90,542.40-135,943.20-51,176.40

Finding the Fourth Proportional to 90,542.40, 135,943.20 and 51,176.40

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Solution

The fourth proportional to 90,542.40, 135,943.20 and 51,176.40 is: 76,837.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,542.40 : 135,943.20 = 51,176.40 : x
  2. Step 2: Convert to fraction form
    90,542.40/135,943.20 = 51,176.40/x
  3. Step 3: Cross multiply
    90,542.40x = 135,943.20 × 51,176.40
  4. Step 4: Simplify right side
    90,542.40x = 6,957,083,580.48
  5. Step 5: Solve for x
    x = 6,957,083,580.48/90,542.40
  6. Step 6: Final answer
    x = 76,837.85

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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.