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Finding the Fourth Proportional to 90,197.64, 135,146.56 and 63,487.69

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Solution

The fourth proportional to 90,197.64, 135,146.56 and 63,487.69 is: 95,126.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,197.64 : 135,146.56 = 63,487.69 : x
  2. Step 2: Convert to fraction form
    90,197.64/135,146.56 = 63,487.69/x
  3. Step 3: Cross multiply
    90,197.64x = 135,146.56 × 63,487.69
  4. Step 4: Simplify right side
    90,197.64x = 8,580,142,905.85
  5. Step 5: Solve for x
    x = 8,580,142,905.85/90,197.64
  6. Step 6: Final answer
    x = 95,126.02

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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.