Home / 143,945.52-198,645.12-80,281.68

Finding the Fourth Proportional to 143,945.52, 198,645.12 and 80,281.68

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Solution

The fourth proportional to 143,945.52, 198,645.12 and 80,281.68 is: 110,788.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,945.52 : 198,645.12 = 80,281.68 : x
  2. Step 2: Convert to fraction form
    143,945.52/198,645.12 = 80,281.68/x
  3. Step 3: Cross multiply
    143,945.52x = 198,645.12 × 80,281.68
  4. Step 4: Simplify right side
    143,945.52x = 15,947,563,957.40
  5. Step 5: Solve for x
    x = 15,947,563,957.40/143,945.52
  6. Step 6: Final answer
    x = 110,788.89

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1.5x scale

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.