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Finding the Fourth Proportional to 122,679.67, 169,293.50 and 68,969.69

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Solution

The fourth proportional to 122,679.67, 169,293.50 and 68,969.69 is: 95,175.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,679.67 : 169,293.50 = 68,969.69 : x
  2. Step 2: Convert to fraction form
    122,679.67/169,293.50 = 68,969.69/x
  3. Step 3: Cross multiply
    122,679.67x = 169,293.50 × 68,969.69
  4. Step 4: Simplify right side
    122,679.67x = 11,676,120,214.02
  5. Step 5: Solve for x
    x = 11,676,120,214.02/122,679.67
  6. Step 6: Final answer
    x = 95,175.67

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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.