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Finding the Fourth Proportional to 123,537.41, 170,481.61 and 66,948.78

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Solution

The fourth proportional to 123,537.41, 170,481.61 and 66,948.78 is: 92,389.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,537.41 : 170,481.61 = 66,948.78 : x
  2. Step 2: Convert to fraction form
    123,537.41/170,481.61 = 66,948.78/x
  3. Step 3: Cross multiply
    123,537.41x = 170,481.61 × 66,948.78
  4. Step 4: Simplify right side
    123,537.41x = 11,413,535,801.94
  5. Step 5: Solve for x
    x = 11,413,535,801.94/123,537.41
  6. Step 6: Final answer
    x = 92,389.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.