Home / 143,641.24-198,223.05-79,109.25

Finding the Fourth Proportional to 143,641.24, 198,223.05 and 79,109.25

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Solution

The fourth proportional to 143,641.24, 198,223.05 and 79,109.25 is: 109,169.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,641.24 : 198,223.05 = 79,109.25 : x
  2. Step 2: Convert to fraction form
    143,641.24/198,223.05 = 79,109.25/x
  3. Step 3: Cross multiply
    143,641.24x = 198,223.05 × 79,109.25
  4. Step 4: Simplify right side
    143,641.24x = 15,681,277,486.54
  5. Step 5: Solve for x
    x = 15,681,277,486.54/143,641.24
  6. Step 6: Final answer
    x = 109,169.74

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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.