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Finding the Fourth Proportional to 122,661.36, 169,224.72 and 68,934.12

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Solution

The fourth proportional to 122,661.36, 169,224.72 and 68,934.12 is: 95,102.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,661.36 : 169,224.72 = 68,934.12 : x
  2. Step 2: Convert to fraction form
    122,661.36/169,224.72 = 68,934.12/x
  3. Step 3: Cross multiply
    122,661.36x = 169,224.72 × 68,934.12
  4. Step 4: Simplify right side
    122,661.36x = 11,665,357,155.45
  5. Step 5: Solve for x
    x = 11,665,357,155.45/122,661.36
  6. Step 6: Final answer
    x = 95,102.13

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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.