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Finding the Fourth Proportional to 103,067.60, 154,511.40 and 39,930.80

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Solution

The fourth proportional to 103,067.60, 154,511.40 and 39,930.80 is: 59,861.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,067.60 : 154,511.40 = 39,930.80 : x
  2. Step 2: Convert to fraction form
    103,067.60/154,511.40 = 39,930.80/x
  3. Step 3: Cross multiply
    103,067.60x = 154,511.40 × 39,930.80
  4. Step 4: Simplify right side
    103,067.60x = 6,169,763,811.12
  5. Step 5: Solve for x
    x = 6,169,763,811.12/103,067.60
  6. Step 6: Final answer
    x = 59,861.33

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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.