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Finding the Fourth Proportional to 129,955.91, 195,011.62 and 119,380.55

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Solution

The fourth proportional to 129,955.91, 195,011.62 and 119,380.55 is: 179,142.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,955.91 : 195,011.62 = 119,380.55 : x
  2. Step 2: Convert to fraction form
    129,955.91/195,011.62 = 119,380.55/x
  3. Step 3: Cross multiply
    129,955.91x = 195,011.62 × 119,380.55
  4. Step 4: Simplify right side
    129,955.91x = 23,280,593,178.48
  5. Step 5: Solve for x
    x = 23,280,593,178.48/129,955.91
  6. Step 6: Final answer
    x = 179,142.25

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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.