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Finding the Fourth Proportional to 122,842.70, 169,615.30 and 120,880.92

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Solution

The fourth proportional to 122,842.70, 169,615.30 and 120,880.92 is: 166,906.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,842.70 : 169,615.30 = 120,880.92 : x
  2. Step 2: Convert to fraction form
    122,842.70/169,615.30 = 120,880.92/x
  3. Step 3: Cross multiply
    122,842.70x = 169,615.30 × 120,880.92
  4. Step 4: Simplify right side
    122,842.70x = 20,503,253,510.08
  5. Step 5: Solve for x
    x = 20,503,253,510.08/122,842.70
  6. Step 6: Final answer
    x = 166,906.57

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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.