Home / 131,997.20-197,997.45-87,304.64

Finding the Fourth Proportional to 131,997.20, 197,997.45 and 87,304.64

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Solution

The fourth proportional to 131,997.20, 197,997.45 and 87,304.64 is: 130,958.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,997.20 : 197,997.45 = 87,304.64 : x
  2. Step 2: Convert to fraction form
    131,997.20/197,997.45 = 87,304.64/x
  3. Step 3: Cross multiply
    131,997.20x = 197,997.45 × 87,304.64
  4. Step 4: Simplify right side
    131,997.20x = 17,286,095,700.97
  5. Step 5: Solve for x
    x = 17,286,095,700.97/131,997.20
  6. Step 6: Final answer
    x = 130,958.05

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1.5x scale

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.