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Finding the Fourth Proportional to 122,395.17, 168,904.87 and 68,680.06

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Solution

The fourth proportional to 122,395.17, 168,904.87 and 68,680.06 is: 94,778.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,395.17 : 168,904.87 = 68,680.06 : x
  2. Step 2: Convert to fraction form
    122,395.17/168,904.87 = 68,680.06/x
  3. Step 3: Cross multiply
    122,395.17x = 168,904.87 × 68,680.06
  4. Step 4: Simplify right side
    122,395.17x = 11,600,396,605.89
  5. Step 5: Solve for x
    x = 11,600,396,605.89/122,395.17
  6. Step 6: Final answer
    x = 94,778.22

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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.