Home / 142,013.44-195,917.09-81,570.23

Finding the Fourth Proportional to 142,013.44, 195,917.09 and 81,570.23

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Solution

The fourth proportional to 142,013.44, 195,917.09 and 81,570.23 is: 112,531.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,013.44 : 195,917.09 = 81,570.23 : x
  2. Step 2: Convert to fraction form
    142,013.44/195,917.09 = 81,570.23/x
  3. Step 3: Cross multiply
    142,013.44x = 195,917.09 × 81,570.23
  4. Step 4: Simplify right side
    142,013.44x = 15,981,002,092.23
  5. Step 5: Solve for x
    x = 15,981,002,092.23/142,013.44
  6. Step 6: Final answer
    x = 112,531.62

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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.