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Finding the Fourth Proportional to 100,062.30, 150,128.61 and 62,579.82

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Solution

The fourth proportional to 100,062.30, 150,128.61 and 62,579.82 is: 93,891.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,062.30 : 150,128.61 = 62,579.82 : x
  2. Step 2: Convert to fraction form
    100,062.30/150,128.61 = 62,579.82/x
  3. Step 3: Cross multiply
    100,062.30x = 150,128.61 × 62,579.82
  4. Step 4: Simplify right side
    100,062.30x = 9,395,021,390.65
  5. Step 5: Solve for x
    x = 9,395,021,390.65/100,062.30
  6. Step 6: Final answer
    x = 93,891.72

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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.