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Finding the Fourth Proportional to 122,620.96, 169,176.12 and 68,898.48

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Solution

The fourth proportional to 122,620.96, 169,176.12 and 68,898.48 is: 95,056.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,620.96 : 169,176.12 = 68,898.48 : x
  2. Step 2: Convert to fraction form
    122,620.96/169,176.12 = 68,898.48/x
  3. Step 3: Cross multiply
    122,620.96x = 169,176.12 × 68,898.48
  4. Step 4: Simplify right side
    122,620.96x = 11,655,977,520.30
  5. Step 5: Solve for x
    x = 11,655,977,520.30/122,620.96
  6. Step 6: Final answer
    x = 95,056.97

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1.5x scale

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.