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Finding the Fourth Proportional to 122,654.01, 169,276.55 and 68,211.60

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Solution

The fourth proportional to 122,654.01, 169,276.55 and 68,211.60 is: 94,139.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,654.01 : 169,276.55 = 68,211.60 : x
  2. Step 2: Convert to fraction form
    122,654.01/169,276.55 = 68,211.60/x
  3. Step 3: Cross multiply
    122,654.01x = 169,276.55 × 68,211.60
  4. Step 4: Simplify right side
    122,654.01x = 11,546,624,317.98
  5. Step 5: Solve for x
    x = 11,546,624,317.98/122,654.01
  6. Step 6: Final answer
    x = 94,139.80

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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.