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Finding the Fourth Proportional to 171,760.30, 236,811.26 and 122,760.40

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Solution

The fourth proportional to 171,760.30, 236,811.26 and 122,760.40 is: 169,253.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,760.30 : 236,811.26 = 122,760.40 : x
  2. Step 2: Convert to fraction form
    171,760.30/236,811.26 = 122,760.40/x
  3. Step 3: Cross multiply
    171,760.30x = 236,811.26 × 122,760.40
  4. Step 4: Simplify right side
    171,760.30x = 29,071,044,716.98
  5. Step 5: Solve for x
    x = 29,071,044,716.98/171,760.30
  6. Step 6: Final answer
    x = 169,253.58

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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.