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Finding the Fourth Proportional to 109,736.60, 164,604.90 and 72,338.90

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Solution

The fourth proportional to 109,736.60, 164,604.90 and 72,338.90 is: 108,508.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,736.60 : 164,604.90 = 72,338.90 : x
  2. Step 2: Convert to fraction form
    109,736.60/164,604.90 = 72,338.90/x
  3. Step 3: Cross multiply
    109,736.60x = 164,604.90 × 72,338.90
  4. Step 4: Simplify right side
    109,736.60x = 11,907,337,400.61
  5. Step 5: Solve for x
    x = 11,907,337,400.61/109,736.60
  6. Step 6: Final answer
    x = 108,508.35

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1.5x scale

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.