Home / 143,843.28-215,688.96-76,413.12

Finding the Fourth Proportional to 143,843.28, 215,688.96 and 76,413.12

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Solution

The fourth proportional to 143,843.28, 215,688.96 and 76,413.12 is: 114,579.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,843.28 : 215,688.96 = 76,413.12 : x
  2. Step 2: Convert to fraction form
    143,843.28/215,688.96 = 76,413.12/x
  3. Step 3: Cross multiply
    143,843.28x = 215,688.96 × 76,413.12
  4. Step 4: Simplify right side
    143,843.28x = 16,481,466,383.16
  5. Step 5: Solve for x
    x = 16,481,466,383.16/143,843.28
  6. Step 6: Final answer
    x = 114,579.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.