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Finding the Fourth Proportional to 104,701.92, 144,542.16 and 80,774.88

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Solution

The fourth proportional to 104,701.92, 144,542.16 and 80,774.88 is: 111,510.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,701.92 : 144,542.16 = 80,774.88 : x
  2. Step 2: Convert to fraction form
    104,701.92/144,542.16 = 80,774.88/x
  3. Step 3: Cross multiply
    104,701.92x = 144,542.16 × 80,774.88
  4. Step 4: Simplify right side
    104,701.92x = 11,675,375,628.94
  5. Step 5: Solve for x
    x = 11,675,375,628.94/104,701.92
  6. Step 6: Final answer
    x = 111,510.62

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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.