Home / 143,241.71-197,679.06-78,713.66

Finding the Fourth Proportional to 143,241.71, 197,679.06 and 78,713.66

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Solution

The fourth proportional to 143,241.71, 197,679.06 and 78,713.66 is: 108,627.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,241.71 : 197,679.06 = 78,713.66 : x
  2. Step 2: Convert to fraction form
    143,241.71/197,679.06 = 78,713.66/x
  3. Step 3: Cross multiply
    143,241.71x = 197,679.06 × 78,713.66
  4. Step 4: Simplify right side
    143,241.71x = 15,560,042,812.16
  5. Step 5: Solve for x
    x = 15,560,042,812.16/143,241.71
  6. Step 6: Final answer
    x = 108,627.88

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1.5x scale

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.