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Finding the Fourth Proportional to 143,544, 215,176.29 and 68,644.71

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Solution

The fourth proportional to 143,544, 215,176.29 and 68,644.71 is: 102,900.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,544 : 215,176.29 = 68,644.71 : x
  2. Step 2: Convert to fraction form
    143,544/215,176.29 = 68,644.71/x
  3. Step 3: Cross multiply
    143,544x = 215,176.29 × 68,644.71
  4. Step 4: Simplify right side
    143,544x = 14,770,714,025.93
  5. Step 5: Solve for x
    x = 14,770,714,025.93/143,544
  6. Step 6: Final answer
    x = 102,900.25

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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.