Home / 143,387.33-197,870.45-79,723.97

Finding the Fourth Proportional to 143,387.33, 197,870.45 and 79,723.97

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Solution

The fourth proportional to 143,387.33, 197,870.45 and 79,723.97 is: 110,016.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,387.33 : 197,870.45 = 79,723.97 : x
  2. Step 2: Convert to fraction form
    143,387.33/197,870.45 = 79,723.97/x
  3. Step 3: Cross multiply
    143,387.33x = 197,870.45 × 79,723.97
  4. Step 4: Simplify right side
    143,387.33x = 15,775,017,421.07
  5. Step 5: Solve for x
    x = 15,775,017,421.07/143,387.33
  6. Step 6: Final answer
    x = 110,016.82

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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.