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Finding the Fourth Proportional to 133,385.70, 200,078.55 and 71,177.70

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Solution

The fourth proportional to 133,385.70, 200,078.55 and 71,177.70 is: 106,766.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,385.70 : 200,078.55 = 71,177.70 : x
  2. Step 2: Convert to fraction form
    133,385.70/200,078.55 = 71,177.70/x
  3. Step 3: Cross multiply
    133,385.70x = 200,078.55 × 71,177.70
  4. Step 4: Simplify right side
    133,385.70x = 14,241,131,008.34
  5. Step 5: Solve for x
    x = 14,241,131,008.34/133,385.70
  6. Step 6: Final answer
    x = 106,766.55

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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.