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Finding the Fourth Proportional to 90,191.70, 135,615.60 and 88,223.40

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Solution

The fourth proportional to 90,191.70, 135,615.60 and 88,223.40 is: 132,655.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,191.70 : 135,615.60 = 88,223.40 : x
  2. Step 2: Convert to fraction form
    90,191.70/135,615.60 = 88,223.40/x
  3. Step 3: Cross multiply
    90,191.70x = 135,615.60 × 88,223.40
  4. Step 4: Simplify right side
    90,191.70x = 11,964,469,325.04
  5. Step 5: Solve for x
    x = 11,964,469,325.04/90,191.70
  6. Step 6: Final answer
    x = 132,655.99

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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.