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Finding the Fourth Proportional to 144,640.31, 216,879.21 and 99,099.41

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Solution

The fourth proportional to 144,640.31, 216,879.21 and 99,099.41 is: 148,593.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,640.31 : 216,879.21 = 99,099.41 : x
  2. Step 2: Convert to fraction form
    144,640.31/216,879.21 = 99,099.41/x
  3. Step 3: Cross multiply
    144,640.31x = 216,879.21 × 99,099.41
  4. Step 4: Simplify right side
    144,640.31x = 21,492,600,667.87
  5. Step 5: Solve for x
    x = 21,492,600,667.87/144,640.31
  6. Step 6: Final answer
    x = 148,593.44

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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.