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Finding the Fourth Proportional to 122,868.54, 169,564.04 and 69,157.03

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Solution

The fourth proportional to 122,868.54, 169,564.04 and 69,157.03 is: 95,439.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,868.54 : 169,564.04 = 69,157.03 : x
  2. Step 2: Convert to fraction form
    122,868.54/169,564.04 = 69,157.03/x
  3. Step 3: Cross multiply
    122,868.54x = 169,564.04 × 69,157.03
  4. Step 4: Simplify right side
    122,868.54x = 11,726,545,401.20
  5. Step 5: Solve for x
    x = 11,726,545,401.20/122,868.54
  6. Step 6: Final answer
    x = 95,439.77

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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.