Home / 143,919.29-198,689.79-99,796.57

Finding the Fourth Proportional to 143,919.29, 198,689.79 and 99,796.57

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Solution

The fourth proportional to 143,919.29, 198,689.79 and 99,796.57 is: 137,775.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,919.29 : 198,689.79 = 99,796.57 : x
  2. Step 2: Convert to fraction form
    143,919.29/198,689.79 = 99,796.57/x
  3. Step 3: Cross multiply
    143,919.29x = 198,689.79 × 99,796.57
  4. Step 4: Simplify right side
    143,919.29x = 19,828,559,413.53
  5. Step 5: Solve for x
    x = 19,828,559,413.53/143,919.29
  6. Step 6: Final answer
    x = 137,775.55

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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.