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Finding the Fourth Proportional to 122,516.88, 169,079.72 and 68,799.12

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Solution

The fourth proportional to 122,516.88, 169,079.72 and 68,799.12 is: 94,946.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,516.88 : 169,079.72 = 68,799.12 : x
  2. Step 2: Convert to fraction form
    122,516.88/169,079.72 = 68,799.12/x
  3. Step 3: Cross multiply
    122,516.88x = 169,079.72 × 68,799.12
  4. Step 4: Simplify right side
    122,516.88x = 11,632,535,945.85
  5. Step 5: Solve for x
    x = 11,632,535,945.85/122,516.88
  6. Step 6: Final answer
    x = 94,946.39

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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.