Home / 90,847.70-136,077.15-80,998.10

Finding the Fourth Proportional to 90,847.70, 136,077.15 and 80,998.10

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Solution

The fourth proportional to 90,847.70, 136,077.15 and 80,998.10 is: 121,323.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,847.70 : 136,077.15 = 80,998.10 : x
  2. Step 2: Convert to fraction form
    90,847.70/136,077.15 = 80,998.10/x
  3. Step 3: Cross multiply
    90,847.70x = 136,077.15 × 80,998.10
  4. Step 4: Simplify right side
    90,847.70x = 11,021,990,603.42
  5. Step 5: Solve for x
    x = 11,021,990,603.42/90,847.70
  6. Step 6: Final answer
    x = 121,323.83

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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.