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Finding the Fourth Proportional to 122,395.32, 168,907.32 and 68,677.20

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Solution

The fourth proportional to 122,395.32, 168,907.32 and 68,677.20 is: 94,775.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,395.32 : 168,907.32 = 68,677.20 : x
  2. Step 2: Convert to fraction form
    122,395.32/168,907.32 = 68,677.20/x
  3. Step 3: Cross multiply
    122,395.32x = 168,907.32 × 68,677.20
  4. Step 4: Simplify right side
    122,395.32x = 11,600,081,797.10
  5. Step 5: Solve for x
    x = 11,600,081,797.10/122,395.32
  6. Step 6: Final answer
    x = 94,775.53

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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.