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Finding the Fourth Proportional to 96,340.80, 144,856.80 and 81,134.40

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Solution

The fourth proportional to 96,340.80, 144,856.80 and 81,134.40 is: 121,992.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,340.80 : 144,856.80 = 81,134.40 : x
  2. Step 2: Convert to fraction form
    96,340.80/144,856.80 = 81,134.40/x
  3. Step 3: Cross multiply
    96,340.80x = 144,856.80 × 81,134.40
  4. Step 4: Simplify right side
    96,340.80x = 11,752,869,553.92
  5. Step 5: Solve for x
    x = 11,752,869,553.92/96,340.80
  6. Step 6: Final answer
    x = 121,992.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.