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Finding the Fourth Proportional to 123,655.44, 170,648.37 and 69,939.41

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Solution

The fourth proportional to 123,655.44, 170,648.37 and 69,939.41 is: 96,518.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,655.44 : 170,648.37 = 69,939.41 : x
  2. Step 2: Convert to fraction form
    123,655.44/170,648.37 = 69,939.41/x
  3. Step 3: Cross multiply
    123,655.44x = 170,648.37 × 69,939.41
  4. Step 4: Simplify right side
    123,655.44x = 11,935,045,462.02
  5. Step 5: Solve for x
    x = 11,935,045,462.02/123,655.44
  6. Step 6: Final answer
    x = 96,518.56

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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.