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Finding the Fourth Proportional to 144,628.10, 216,942.15 and 131,725.70

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Solution

The fourth proportional to 144,628.10, 216,942.15 and 131,725.70 is: 197,588.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,628.10 : 216,942.15 = 131,725.70 : x
  2. Step 2: Convert to fraction form
    144,628.10/216,942.15 = 131,725.70/x
  3. Step 3: Cross multiply
    144,628.10x = 216,942.15 × 131,725.70
  4. Step 4: Simplify right side
    144,628.10x = 28,576,856,568.26
  5. Step 5: Solve for x
    x = 28,576,856,568.26/144,628.10
  6. Step 6: Final answer
    x = 197,588.55

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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.