Home / 143,778.34-198,413.61-80,116.90

Finding the Fourth Proportional to 143,778.34, 198,413.61 and 80,116.90

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Solution

The fourth proportional to 143,778.34, 198,413.61 and 80,116.90 is: 110,561.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,778.34 : 198,413.61 = 80,116.90 : x
  2. Step 2: Convert to fraction form
    143,778.34/198,413.61 = 80,116.90/x
  3. Step 3: Cross multiply
    143,778.34x = 198,413.61 × 80,116.90
  4. Step 4: Simplify right side
    143,778.34x = 15,896,283,351.01
  5. Step 5: Solve for x
    x = 15,896,283,351.01/143,778.34
  6. Step 6: Final answer
    x = 110,561.04

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1.5x scale

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.