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Finding the Fourth Proportional to 140,143.65, 209,723.40 and 95,856.90

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Solution

The fourth proportional to 140,143.65, 209,723.40 and 95,856.90 is: 143,448.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,143.65 : 209,723.40 = 95,856.90 : x
  2. Step 2: Convert to fraction form
    140,143.65/209,723.40 = 95,856.90/x
  3. Step 3: Cross multiply
    140,143.65x = 209,723.40 × 95,856.90
  4. Step 4: Simplify right side
    140,143.65x = 20,103,434,981.46
  5. Step 5: Solve for x
    x = 20,103,434,981.46/140,143.65
  6. Step 6: Final answer
    x = 143,448.78

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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.