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Finding the Fourth Proportional to 133,343.70, 200,145.15 and 80,855.70

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Solution

The fourth proportional to 133,343.70, 200,145.15 and 80,855.70 is: 121,362.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,343.70 : 200,145.15 = 80,855.70 : x
  2. Step 2: Convert to fraction form
    133,343.70/200,145.15 = 80,855.70/x
  3. Step 3: Cross multiply
    133,343.70x = 200,145.15 × 80,855.70
  4. Step 4: Simplify right side
    133,343.70x = 16,182,876,204.86
  5. Step 5: Solve for x
    x = 16,182,876,204.86/133,343.70
  6. Step 6: Final answer
    x = 121,362.14

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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.