Home / 142,067.16-196,042.19-81,637.92

Finding the Fourth Proportional to 142,067.16, 196,042.19 and 81,637.92

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Solution

The fourth proportional to 142,067.16, 196,042.19 and 81,637.92 is: 112,654.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,067.16 : 196,042.19 = 81,637.92 : x
  2. Step 2: Convert to fraction form
    142,067.16/196,042.19 = 81,637.92/x
  3. Step 3: Cross multiply
    142,067.16x = 196,042.19 × 81,637.92
  4. Step 4: Simplify right side
    142,067.16x = 16,004,476,215.66
  5. Step 5: Solve for x
    x = 16,004,476,215.66/142,067.16
  6. Step 6: Final answer
    x = 112,654.30

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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.