Home / 143,244.90-197,677.92-78,718.29

Finding the Fourth Proportional to 143,244.90, 197,677.92 and 78,718.29

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Solution

The fourth proportional to 143,244.90, 197,677.92 and 78,718.29 is: 108,631.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,244.90 : 197,677.92 = 78,718.29 : x
  2. Step 2: Convert to fraction form
    143,244.90/197,677.92 = 78,718.29/x
  3. Step 3: Cross multiply
    143,244.90x = 197,677.92 × 78,718.29
  4. Step 4: Simplify right side
    143,244.90x = 15,560,867,833.16
  5. Step 5: Solve for x
    x = 15,560,867,833.16/143,244.90
  6. Step 6: Final answer
    x = 108,631.22

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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.