Home / 136,964.25-205,163.40-80,630.76

Finding the Fourth Proportional to 136,964.25, 205,163.40 and 80,630.76

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Solution

The fourth proportional to 136,964.25, 205,163.40 and 80,630.76 is: 120,779.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,964.25 : 205,163.40 = 80,630.76 : x
  2. Step 2: Convert to fraction form
    136,964.25/205,163.40 = 80,630.76/x
  3. Step 3: Cross multiply
    136,964.25x = 205,163.40 × 80,630.76
  4. Step 4: Simplify right side
    136,964.25x = 16,542,480,866.18
  5. Step 5: Solve for x
    x = 16,542,480,866.18/136,964.25
  6. Step 6: Final answer
    x = 120,779.55

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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.