Home / 131,587.20-197,380.80-80,848.80

Finding the Fourth Proportional to 131,587.20, 197,380.80 and 80,848.80

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Solution

The fourth proportional to 131,587.20, 197,380.80 and 80,848.80 is: 121,273.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,587.20 : 197,380.80 = 80,848.80 : x
  2. Step 2: Convert to fraction form
    131,587.20/197,380.80 = 80,848.80/x
  3. Step 3: Cross multiply
    131,587.20x = 197,380.80 × 80,848.80
  4. Step 4: Simplify right side
    131,587.20x = 15,958,000,823.04
  5. Step 5: Solve for x
    x = 15,958,000,823.04/131,587.20
  6. Step 6: Final answer
    x = 121,273.20

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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.