Home / 142,162.88-196,195.11-81,752.48

Finding the Fourth Proportional to 142,162.88, 196,195.11 and 81,752.48

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Solution

The fourth proportional to 142,162.88, 196,195.11 and 81,752.48 is: 112,824.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,162.88 : 196,195.11 = 81,752.48 : x
  2. Step 2: Convert to fraction form
    142,162.88/196,195.11 = 81,752.48/x
  3. Step 3: Cross multiply
    142,162.88x = 196,195.11 × 81,752.48
  4. Step 4: Simplify right side
    142,162.88x = 16,039,435,825.40
  5. Step 5: Solve for x
    x = 16,039,435,825.40/142,162.88
  6. Step 6: Final answer
    x = 112,824.36

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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.