Home / 144,105.12-198,856.71-80,446.95

Finding the Fourth Proportional to 144,105.12, 198,856.71 and 80,446.95

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Solution

The fourth proportional to 144,105.12, 198,856.71 and 80,446.95 is: 111,012.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,105.12 : 198,856.71 = 80,446.95 : x
  2. Step 2: Convert to fraction form
    144,105.12/198,856.71 = 80,446.95/x
  3. Step 3: Cross multiply
    144,105.12x = 198,856.71 × 80,446.95
  4. Step 4: Simplify right side
    144,105.12x = 15,997,415,806.53
  5. Step 5: Solve for x
    x = 15,997,415,806.53/144,105.12
  6. Step 6: Final answer
    x = 111,012.13

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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.