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Finding the Fourth Proportional to 122,018.58, 168,382.53 and 68,301

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Solution

The fourth proportional to 122,018.58, 168,382.53 and 68,301 is: 94,253.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,018.58 : 168,382.53 = 68,301 : x
  2. Step 2: Convert to fraction form
    122,018.58/168,382.53 = 68,301/x
  3. Step 3: Cross multiply
    122,018.58x = 168,382.53 × 68,301
  4. Step 4: Simplify right side
    122,018.58x = 11,500,695,181.53
  5. Step 5: Solve for x
    x = 11,500,695,181.53/122,018.58
  6. Step 6: Final answer
    x = 94,253.64

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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.