Home / 143,538.41-198,081.45-79,006.25

Finding the Fourth Proportional to 143,538.41, 198,081.45 and 79,006.25

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Solution

The fourth proportional to 143,538.41, 198,081.45 and 79,006.25 is: 109,027.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,538.41 : 198,081.45 = 79,006.25 : x
  2. Step 2: Convert to fraction form
    143,538.41/198,081.45 = 79,006.25/x
  3. Step 3: Cross multiply
    143,538.41x = 198,081.45 × 79,006.25
  4. Step 4: Simplify right side
    143,538.41x = 15,649,673,054.27
  5. Step 5: Solve for x
    x = 15,649,673,054.27/143,538.41
  6. Step 6: Final answer
    x = 109,027.77

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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.