Home / 131,386.20-197,079.30-121,248.60

Finding the Fourth Proportional to 131,386.20, 197,079.30 and 121,248.60

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Solution

The fourth proportional to 131,386.20, 197,079.30 and 121,248.60 is: 181,872.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,386.20 : 197,079.30 = 121,248.60 : x
  2. Step 2: Convert to fraction form
    131,386.20/197,079.30 = 121,248.60/x
  3. Step 3: Cross multiply
    131,386.20x = 197,079.30 × 121,248.60
  4. Step 4: Simplify right side
    131,386.20x = 23,895,589,213.98
  5. Step 5: Solve for x
    x = 23,895,589,213.98/131,386.20
  6. Step 6: Final answer
    x = 181,872.90

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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.