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Finding the Fourth Proportional to 120,654.38, 166,510.92 and 69,669.26

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Solution

The fourth proportional to 120,654.38, 166,510.92 and 69,669.26 is: 96,148.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,654.38 : 166,510.92 = 69,669.26 : x
  2. Step 2: Convert to fraction form
    120,654.38/166,510.92 = 69,669.26/x
  3. Step 3: Cross multiply
    120,654.38x = 166,510.92 × 69,669.26
  4. Step 4: Simplify right side
    120,654.38x = 11,600,692,578.32
  5. Step 5: Solve for x
    x = 11,600,692,578.32/120,654.38
  6. Step 6: Final answer
    x = 96,148.13

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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.