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Finding the Fourth Proportional to 139,637.70, 192,714.30 and 82,294.86

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Solution

The fourth proportional to 139,637.70, 192,714.30 and 82,294.86 is: 113,575.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,637.70 : 192,714.30 = 82,294.86 : x
  2. Step 2: Convert to fraction form
    139,637.70/192,714.30 = 82,294.86/x
  3. Step 3: Cross multiply
    139,637.70x = 192,714.30 × 82,294.86
  4. Step 4: Simplify right side
    139,637.70x = 15,859,396,338.50
  5. Step 5: Solve for x
    x = 15,859,396,338.50/139,637.70
  6. Step 6: Final answer
    x = 113,575.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.