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Finding the Fourth Proportional to 122,661.66, 169,277.86 and 68,946.50

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Solution

The fourth proportional to 122,661.66, 169,277.86 and 68,946.50 is: 95,148.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,661.66 : 169,277.86 = 68,946.50 : x
  2. Step 2: Convert to fraction form
    122,661.66/169,277.86 = 68,946.50/x
  3. Step 3: Cross multiply
    122,661.66x = 169,277.86 × 68,946.50
  4. Step 4: Simplify right side
    122,661.66x = 11,671,115,974.49
  5. Step 5: Solve for x
    x = 11,671,115,974.49/122,661.66
  6. Step 6: Final answer
    x = 95,148.85

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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.