Home / 142,023.19-195,998.25-81,612.78

Finding the Fourth Proportional to 142,023.19, 195,998.25 and 81,612.78

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Solution

The fourth proportional to 142,023.19, 195,998.25 and 81,612.78 is: 112,629.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,023.19 : 195,998.25 = 81,612.78 : x
  2. Step 2: Convert to fraction form
    142,023.19/195,998.25 = 81,612.78/x
  3. Step 3: Cross multiply
    142,023.19x = 195,998.25 × 81,612.78
  4. Step 4: Simplify right side
    142,023.19x = 15,995,962,363.68
  5. Step 5: Solve for x
    x = 15,995,962,363.68/142,023.19
  6. Step 6: Final answer
    x = 112,629.23

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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.