Home / 143,233.71-197,668.01-78,705.66

Finding the Fourth Proportional to 143,233.71, 197,668.01 and 78,705.66

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Solution

The fourth proportional to 143,233.71, 197,668.01 and 78,705.66 is: 108,616.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,233.71 : 197,668.01 = 78,705.66 : x
  2. Step 2: Convert to fraction form
    143,233.71/197,668.01 = 78,705.66/x
  3. Step 3: Cross multiply
    143,233.71x = 197,668.01 × 78,705.66
  4. Step 4: Simplify right side
    143,233.71x = 15,557,591,187.94
  5. Step 5: Solve for x
    x = 15,557,591,187.94/143,233.71
  6. Step 6: Final answer
    x = 108,616.83

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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.