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Finding the Fourth Proportional to 123,469.32, 170,391.12 and 69,756.60

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Solution

The fourth proportional to 123,469.32, 170,391.12 and 69,756.60 is: 96,266.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,469.32 : 170,391.12 = 69,756.60 : x
  2. Step 2: Convert to fraction form
    123,469.32/170,391.12 = 69,756.60/x
  3. Step 3: Cross multiply
    123,469.32x = 170,391.12 × 69,756.60
  4. Step 4: Simplify right side
    123,469.32x = 11,885,905,201.39
  5. Step 5: Solve for x
    x = 11,885,905,201.39/123,469.32
  6. Step 6: Final answer
    x = 96,266.06

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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.