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Finding the Fourth Proportional to 144,324.90, 216,491.04 and 68,405.70

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Solution

The fourth proportional to 144,324.90, 216,491.04 and 68,405.70 is: 102,610.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,324.90 : 216,491.04 = 68,405.70 : x
  2. Step 2: Convert to fraction form
    144,324.90/216,491.04 = 68,405.70/x
  3. Step 3: Cross multiply
    144,324.90x = 216,491.04 × 68,405.70
  4. Step 4: Simplify right side
    144,324.90x = 14,809,221,134.93
  5. Step 5: Solve for x
    x = 14,809,221,134.93/144,324.90
  6. Step 6: Final answer
    x = 102,610.30

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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.