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Finding the Fourth Proportional to 123,468.24, 170,386.40 and 66,879.64

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Solution

The fourth proportional to 123,468.24, 170,386.40 and 66,879.64 is: 92,294.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,468.24 : 170,386.40 = 66,879.64 : x
  2. Step 2: Convert to fraction form
    123,468.24/170,386.40 = 66,879.64/x
  3. Step 3: Cross multiply
    123,468.24x = 170,386.40 × 66,879.64
  4. Step 4: Simplify right side
    123,468.24x = 11,395,381,092.90
  5. Step 5: Solve for x
    x = 11,395,381,092.90/123,468.24
  6. Step 6: Final answer
    x = 92,294.03

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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.