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Finding the Fourth Proportional to 136,768.60, 205,037.70 and 71,104.60

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Solution

The fourth proportional to 136,768.60, 205,037.70 and 71,104.60 is: 106,597.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,768.60 : 205,037.70 = 71,104.60 : x
  2. Step 2: Convert to fraction form
    136,768.60/205,037.70 = 71,104.60/x
  3. Step 3: Cross multiply
    136,768.60x = 205,037.70 × 71,104.60
  4. Step 4: Simplify right side
    136,768.60x = 14,579,123,643.42
  5. Step 5: Solve for x
    x = 14,579,123,643.42/136,768.60
  6. Step 6: Final answer
    x = 106,597.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.