Home / 143,972.72-198,680.04-80,308.88

Finding the Fourth Proportional to 143,972.72, 198,680.04 and 80,308.88

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Solution

The fourth proportional to 143,972.72, 198,680.04 and 80,308.88 is: 110,824.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,972.72 : 198,680.04 = 80,308.88 : x
  2. Step 2: Convert to fraction form
    143,972.72/198,680.04 = 80,308.88/x
  3. Step 3: Cross multiply
    143,972.72x = 198,680.04 × 80,308.88
  4. Step 4: Simplify right side
    143,972.72x = 15,955,771,490.76
  5. Step 5: Solve for x
    x = 15,955,771,490.76/143,972.72
  6. Step 6: Final answer
    x = 110,824.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.