Home / 143,389.73-197,876.63-79,726.97

Finding the Fourth Proportional to 143,389.73, 197,876.63 and 79,726.97

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Solution

The fourth proportional to 143,389.73, 197,876.63 and 79,726.97 is: 110,022.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,389.73 : 197,876.63 = 79,726.97 : x
  2. Step 2: Convert to fraction form
    143,389.73/197,876.63 = 79,726.97/x
  3. Step 3: Cross multiply
    143,389.73x = 197,876.63 × 79,726.97
  4. Step 4: Simplify right side
    143,389.73x = 15,776,104,143.71
  5. Step 5: Solve for x
    x = 15,776,104,143.71/143,389.73
  6. Step 6: Final answer
    x = 110,022.55

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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.