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Finding the Fourth Proportional to 175,286.70, 263,102.85 and 86,640.30

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Solution

The fourth proportional to 175,286.70, 263,102.85 and 86,640.30 is: 130,045.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,286.70 : 263,102.85 = 86,640.30 : x
  2. Step 2: Convert to fraction form
    175,286.70/263,102.85 = 86,640.30/x
  3. Step 3: Cross multiply
    175,286.70x = 263,102.85 × 86,640.30
  4. Step 4: Simplify right side
    175,286.70x = 22,795,309,854.86
  5. Step 5: Solve for x
    x = 22,795,309,854.86/175,286.70
  6. Step 6: Final answer
    x = 130,045.86

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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.