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Finding the Fourth Proportional to 122,063.70, 168,428.42 and 68,350.98

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Solution

The fourth proportional to 122,063.70, 168,428.42 and 68,350.98 is: 94,313.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,063.70 : 168,428.42 = 68,350.98 : x
  2. Step 2: Convert to fraction form
    122,063.70/168,428.42 = 68,350.98/x
  3. Step 3: Cross multiply
    122,063.70x = 168,428.42 × 68,350.98
  4. Step 4: Simplify right side
    122,063.70x = 11,512,247,566.85
  5. Step 5: Solve for x
    x = 11,512,247,566.85/122,063.70
  6. Step 6: Final answer
    x = 94,313.44

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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.