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Finding the Fourth Proportional to 90,200.64, 135,205.92 and 43,354.56

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Solution

The fourth proportional to 90,200.64, 135,205.92 and 43,354.56 is: 64,986.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,200.64 : 135,205.92 = 43,354.56 : x
  2. Step 2: Convert to fraction form
    90,200.64/135,205.92 = 43,354.56/x
  3. Step 3: Cross multiply
    90,200.64x = 135,205.92 × 43,354.56
  4. Step 4: Simplify right side
    90,200.64x = 5,861,793,171.00
  5. Step 5: Solve for x
    x = 5,861,793,171.00/90,200.64
  6. Step 6: Final answer
    x = 64,986.16

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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.