Home / 142,725.52-196,958.64-79,063.12

Finding the Fourth Proportional to 142,725.52, 196,958.64 and 79,063.12

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Solution

The fourth proportional to 142,725.52, 196,958.64 and 79,063.12 is: 109,105.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,725.52 : 196,958.64 = 79,063.12 : x
  2. Step 2: Convert to fraction form
    142,725.52/196,958.64 = 79,063.12/x
  3. Step 3: Cross multiply
    142,725.52x = 196,958.64 × 79,063.12
  4. Step 4: Simplify right side
    142,725.52x = 15,572,164,589.36
  5. Step 5: Solve for x
    x = 15,572,164,589.36/142,725.52
  6. Step 6: Final answer
    x = 109,105.68

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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.