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Finding the Fourth Proportional to 122,930.80, 169,623.12 and 69,211.60

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Solution

The fourth proportional to 122,930.80, 169,623.12 and 69,211.60 is: 95,499.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,930.80 : 169,623.12 = 69,211.60 : x
  2. Step 2: Convert to fraction form
    122,930.80/169,623.12 = 69,211.60/x
  3. Step 3: Cross multiply
    122,930.80x = 169,623.12 × 69,211.60
  4. Step 4: Simplify right side
    122,930.80x = 11,739,887,532.19
  5. Step 5: Solve for x
    x = 11,739,887,532.19/122,930.80
  6. Step 6: Final answer
    x = 95,499.97

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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.