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Finding the Fourth Proportional to 140,661.99, 210,847.19 and 87,950.43

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Solution

The fourth proportional to 140,661.99, 210,847.19 and 87,950.43 is: 131,834.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,661.99 : 210,847.19 = 87,950.43 : x
  2. Step 2: Convert to fraction form
    140,661.99/210,847.19 = 87,950.43/x
  3. Step 3: Cross multiply
    140,661.99x = 210,847.19 × 87,950.43
  4. Step 4: Simplify right side
    140,661.99x = 18,544,100,585.04
  5. Step 5: Solve for x
    x = 18,544,100,585.04/140,661.99
  6. Step 6: Final answer
    x = 131,834.48

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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.