Home / 143,669.95-198,270.69-80,007.75

Finding the Fourth Proportional to 143,669.95, 198,270.69 and 80,007.75

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Solution

The fourth proportional to 143,669.95, 198,270.69 and 80,007.75 is: 110,414.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,669.95 : 198,270.69 = 80,007.75 : x
  2. Step 2: Convert to fraction form
    143,669.95/198,270.69 = 80,007.75/x
  3. Step 3: Cross multiply
    143,669.95x = 198,270.69 × 80,007.75
  4. Step 4: Simplify right side
    143,669.95x = 15,863,191,497.82
  5. Step 5: Solve for x
    x = 15,863,191,497.82/143,669.95
  6. Step 6: Final answer
    x = 110,414.12

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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.