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Finding the Fourth Proportional to 135,008.80, 202,124.40 and 82,520.80

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Solution

The fourth proportional to 135,008.80, 202,124.40 and 82,520.80 is: 123,543.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,008.80 : 202,124.40 = 82,520.80 : x
  2. Step 2: Convert to fraction form
    135,008.80/202,124.40 = 82,520.80/x
  3. Step 3: Cross multiply
    135,008.80x = 202,124.40 × 82,520.80
  4. Step 4: Simplify right side
    135,008.80x = 16,679,467,187.52
  5. Step 5: Solve for x
    x = 16,679,467,187.52/135,008.80
  6. Step 6: Final answer
    x = 123,543.56

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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.