Home / 90,331.12-135,627.90-66,711.52

Finding the Fourth Proportional to 90,331.12, 135,627.90 and 66,711.52

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Solution

The fourth proportional to 90,331.12, 135,627.90 and 66,711.52 is: 100,164.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,331.12 : 135,627.90 = 66,711.52 : x
  2. Step 2: Convert to fraction form
    90,331.12/135,627.90 = 66,711.52/x
  3. Step 3: Cross multiply
    90,331.12x = 135,627.90 × 66,711.52
  4. Step 4: Simplify right side
    90,331.12x = 9,047,943,363.41
  5. Step 5: Solve for x
    x = 9,047,943,363.41/90,331.12
  6. Step 6: Final answer
    x = 100,164.19

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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.