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Finding the Fourth Proportional to 140,661.24, 210,846.06 and 87,949.68

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Solution

The fourth proportional to 140,661.24, 210,846.06 and 87,949.68 is: 131,833.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,661.24 : 210,846.06 = 87,949.68 : x
  2. Step 2: Convert to fraction form
    140,661.24/210,846.06 = 87,949.68/x
  3. Step 3: Cross multiply
    140,661.24x = 210,846.06 × 87,949.68
  4. Step 4: Simplify right side
    140,661.24x = 18,543,843,506.26
  5. Step 5: Solve for x
    x = 18,543,843,506.26/140,661.24
  6. Step 6: Final answer
    x = 131,833.36

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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.