Home / 143,910.92-198,594.51-79,386.05

Finding the Fourth Proportional to 143,910.92, 198,594.51 and 79,386.05

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Solution

The fourth proportional to 143,910.92, 198,594.51 and 79,386.05 is: 109,551.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,910.92 : 198,594.51 = 79,386.05 : x
  2. Step 2: Convert to fraction form
    143,910.92/198,594.51 = 79,386.05/x
  3. Step 3: Cross multiply
    143,910.92x = 198,594.51 × 79,386.05
  4. Step 4: Simplify right side
    143,910.92x = 15,765,632,707.61
  5. Step 5: Solve for x
    x = 15,765,632,707.61/143,910.92
  6. Step 6: Final answer
    x = 109,551.33

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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.