Home / 90,999.40-136,499.10-82,834.60

Finding the Fourth Proportional to 90,999.40, 136,499.10 and 82,834.60

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Solution

The fourth proportional to 90,999.40, 136,499.10 and 82,834.60 is: 124,251.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,999.40 : 136,499.10 = 82,834.60 : x
  2. Step 2: Convert to fraction form
    90,999.40/136,499.10 = 82,834.60/x
  3. Step 3: Cross multiply
    90,999.40x = 136,499.10 × 82,834.60
  4. Step 4: Simplify right side
    90,999.40x = 11,306,848,348.86
  5. Step 5: Solve for x
    x = 11,306,848,348.86/90,999.40
  6. Step 6: Final answer
    x = 124,251.90

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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.