Home / 142,504.52-196,628.92-81,249.55

Finding the Fourth Proportional to 142,504.52, 196,628.92 and 81,249.55

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Solution

The fourth proportional to 142,504.52, 196,628.92 and 81,249.55 is: 112,108.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,504.52 : 196,628.92 = 81,249.55 : x
  2. Step 2: Convert to fraction form
    142,504.52/196,628.92 = 81,249.55/x
  3. Step 3: Cross multiply
    142,504.52x = 196,628.92 × 81,249.55
  4. Step 4: Simplify right side
    142,504.52x = 15,976,010,572.29
  5. Step 5: Solve for x
    x = 15,976,010,572.29/142,504.52
  6. Step 6: Final answer
    x = 112,108.80

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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.