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Finding the Fourth Proportional to 123,442.98, 170,361.80 and 69,737.85

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Solution

The fourth proportional to 123,442.98, 170,361.80 and 69,737.85 is: 96,244.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,442.98 : 170,361.80 = 69,737.85 : x
  2. Step 2: Convert to fraction form
    123,442.98/170,361.80 = 69,737.85/x
  3. Step 3: Cross multiply
    123,442.98x = 170,361.80 × 69,737.85
  4. Step 4: Simplify right side
    123,442.98x = 11,880,665,654.13
  5. Step 5: Solve for x
    x = 11,880,665,654.13/123,442.98
  6. Step 6: Final answer
    x = 96,244.16

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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.