Home / 143,234.71-197,669.39-78,706.66

Finding the Fourth Proportional to 143,234.71, 197,669.39 and 78,706.66

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Solution

The fourth proportional to 143,234.71, 197,669.39 and 78,706.66 is: 108,618.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,234.71 : 197,669.39 = 78,706.66 : x
  2. Step 2: Convert to fraction form
    143,234.71/197,669.39 = 78,706.66/x
  3. Step 3: Cross multiply
    143,234.71x = 197,669.39 × 78,706.66
  4. Step 4: Simplify right side
    143,234.71x = 15,557,897,471.14
  5. Step 5: Solve for x
    x = 15,557,897,471.14/143,234.71
  6. Step 6: Final answer
    x = 108,618.21

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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.