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Finding the Fourth Proportional to 92,212.70, 138,209.70 and 82,808.60

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Solution

The fourth proportional to 92,212.70, 138,209.70 and 82,808.60 is: 124,114.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,212.70 : 138,209.70 = 82,808.60 : x
  2. Step 2: Convert to fraction form
    92,212.70/138,209.70 = 82,808.60/x
  3. Step 3: Cross multiply
    92,212.70x = 138,209.70 × 82,808.60
  4. Step 4: Simplify right side
    92,212.70x = 11,444,951,763.42
  5. Step 5: Solve for x
    x = 11,444,951,763.42/92,212.70
  6. Step 6: Final answer
    x = 124,114.70

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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.