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Finding the Fourth Proportional to 141,999.78, 195,955.11 and 80,752.53

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Solution

The fourth proportional to 141,999.78, 195,955.11 and 80,752.53 is: 111,435.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,999.78 : 195,955.11 = 80,752.53 : x
  2. Step 2: Convert to fraction form
    141,999.78/195,955.11 = 80,752.53/x
  3. Step 3: Cross multiply
    141,999.78x = 195,955.11 × 80,752.53
  4. Step 4: Simplify right side
    141,999.78x = 15,823,870,898.93
  5. Step 5: Solve for x
    x = 15,823,870,898.93/141,999.78
  6. Step 6: Final answer
    x = 111,435.88

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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.