Home / 90,848.20-136,077.90-80,998.60

Finding the Fourth Proportional to 90,848.20, 136,077.90 and 80,998.60

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Solution

The fourth proportional to 90,848.20, 136,077.90 and 80,998.60 is: 121,324.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,848.20 : 136,077.90 = 80,998.60 : x
  2. Step 2: Convert to fraction form
    90,848.20/136,077.90 = 80,998.60/x
  3. Step 3: Cross multiply
    90,848.20x = 136,077.90 × 80,998.60
  4. Step 4: Simplify right side
    90,848.20x = 11,022,119,390.94
  5. Step 5: Solve for x
    x = 11,022,119,390.94/90,848.20
  6. Step 6: Final answer
    x = 121,324.58

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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.