Home / 142,701.75-196,928.42-79,043.65

Finding the Fourth Proportional to 142,701.75, 196,928.42 and 79,043.65

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Solution

The fourth proportional to 142,701.75, 196,928.42 and 79,043.65 is: 109,080.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,701.75 : 196,928.42 = 79,043.65 : x
  2. Step 2: Convert to fraction form
    142,701.75/196,928.42 = 79,043.65/x
  3. Step 3: Cross multiply
    142,701.75x = 196,928.42 × 79,043.65
  4. Step 4: Simplify right side
    142,701.75x = 15,565,940,217.99
  5. Step 5: Solve for x
    x = 15,565,940,217.99/142,701.75
  6. Step 6: Final answer
    x = 109,080.23

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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.