Home / 143,369.28-197,854.65-78,843.42

Finding the Fourth Proportional to 143,369.28, 197,854.65 and 78,843.42

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Solution

The fourth proportional to 143,369.28, 197,854.65 and 78,843.42 is: 108,806.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,369.28 : 197,854.65 = 78,843.42 : x
  2. Step 2: Convert to fraction form
    143,369.28/197,854.65 = 78,843.42/x
  3. Step 3: Cross multiply
    143,369.28x = 197,854.65 × 78,843.42
  4. Step 4: Simplify right side
    143,369.28x = 15,599,537,268.90
  5. Step 5: Solve for x
    x = 15,599,537,268.90/143,369.28
  6. Step 6: Final answer
    x = 108,806.69

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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.