Home / 143,890.76-198,694.61-90,267.95

Finding the Fourth Proportional to 143,890.76, 198,694.61 and 90,267.95

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Solution

The fourth proportional to 143,890.76, 198,694.61 and 90,267.95 is: 124,648.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,890.76 : 198,694.61 = 90,267.95 : x
  2. Step 2: Convert to fraction form
    143,890.76/198,694.61 = 90,267.95/x
  3. Step 3: Cross multiply
    143,890.76x = 198,694.61 × 90,267.95
  4. Step 4: Simplify right side
    143,890.76x = 17,935,755,120.75
  5. Step 5: Solve for x
    x = 17,935,755,120.75/143,890.76
  6. Step 6: Final answer
    x = 124,648.41

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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.