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Finding the Fourth Proportional to 134,471.80, 201,750.90 and 90,148.60

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Solution

The fourth proportional to 134,471.80, 201,750.90 and 90,148.60 is: 135,251.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,471.80 : 201,750.90 = 90,148.60 : x
  2. Step 2: Convert to fraction form
    134,471.80/201,750.90 = 90,148.60/x
  3. Step 3: Cross multiply
    134,471.80x = 201,750.90 × 90,148.60
  4. Step 4: Simplify right side
    134,471.80x = 18,187,561,183.74
  5. Step 5: Solve for x
    x = 18,187,561,183.74/134,471.80
  6. Step 6: Final answer
    x = 135,251.86

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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.