Home / 143,629.20-198,208.29-83,211.52

Finding the Fourth Proportional to 143,629.20, 198,208.29 and 83,211.52

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Solution

The fourth proportional to 143,629.20, 198,208.29 and 83,211.52 is: 114,831.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,629.20 : 198,208.29 = 83,211.52 : x
  2. Step 2: Convert to fraction form
    143,629.20/198,208.29 = 83,211.52/x
  3. Step 3: Cross multiply
    143,629.20x = 198,208.29 × 83,211.52
  4. Step 4: Simplify right side
    143,629.20x = 16,493,212,407.71
  5. Step 5: Solve for x
    x = 16,493,212,407.71/143,629.20
  6. Step 6: Final answer
    x = 114,831.89

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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.