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Finding the Fourth Proportional to 122,228.72, 168,676.68 and 68,513.84

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Solution

The fourth proportional to 122,228.72, 168,676.68 and 68,513.84 is: 94,549.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,228.72 : 168,676.68 = 68,513.84 : x
  2. Step 2: Convert to fraction form
    122,228.72/168,676.68 = 68,513.84/x
  3. Step 3: Cross multiply
    122,228.72x = 168,676.68 × 68,513.84
  4. Step 4: Simplify right side
    122,228.72x = 11,556,687,065.25
  5. Step 5: Solve for x
    x = 11,556,687,065.25/122,228.72
  6. Step 6: Final answer
    x = 94,549.69

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.