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Finding the Fourth Proportional to 144,719.33, 217,153.11 and 68,903.69

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Solution

The fourth proportional to 144,719.33, 217,153.11 and 68,903.69 is: 103,390.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,719.33 : 217,153.11 = 68,903.69 : x
  2. Step 2: Convert to fraction form
    144,719.33/217,153.11 = 68,903.69/x
  3. Step 3: Cross multiply
    144,719.33x = 217,153.11 × 68,903.69
  4. Step 4: Simplify right side
    144,719.33x = 14,962,649,488.21
  5. Step 5: Solve for x
    x = 14,962,649,488.21/144,719.33
  6. Step 6: Final answer
    x = 103,390.82

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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.