Home / 142,053.70-196,067.65-81,659.37

Finding the Fourth Proportional to 142,053.70, 196,067.65 and 81,659.37

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Solution

The fourth proportional to 142,053.70, 196,067.65 and 81,659.37 is: 112,709.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,053.70 : 196,067.65 = 81,659.37 : x
  2. Step 2: Convert to fraction form
    142,053.70/196,067.65 = 81,659.37/x
  3. Step 3: Cross multiply
    142,053.70x = 196,067.65 × 81,659.37
  4. Step 4: Simplify right side
    142,053.70x = 16,010,760,572.23
  5. Step 5: Solve for x
    x = 16,010,760,572.23/142,053.70
  6. Step 6: Final answer
    x = 112,709.21

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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.