Home / 143,556.12-198,113.94-83,129.40

Finding the Fourth Proportional to 143,556.12, 198,113.94 and 83,129.40

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Solution

The fourth proportional to 143,556.12, 198,113.94 and 83,129.40 is: 114,722.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,556.12 : 198,113.94 = 83,129.40 : x
  2. Step 2: Convert to fraction form
    143,556.12/198,113.94 = 83,129.40/x
  3. Step 3: Cross multiply
    143,556.12x = 198,113.94 × 83,129.40
  4. Step 4: Simplify right side
    143,556.12x = 16,469,092,963.84
  5. Step 5: Solve for x
    x = 16,469,092,963.84/143,556.12
  6. Step 6: Final answer
    x = 114,722.33

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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.