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Finding the Fourth Proportional to 112,067.60, 168,101.40 and 40,990.10

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Solution

The fourth proportional to 112,067.60, 168,101.40 and 40,990.10 is: 61,485.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,067.60 : 168,101.40 = 40,990.10 : x
  2. Step 2: Convert to fraction form
    112,067.60/168,101.40 = 40,990.10/x
  3. Step 3: Cross multiply
    112,067.60x = 168,101.40 × 40,990.10
  4. Step 4: Simplify right side
    112,067.60x = 6,890,493,196.14
  5. Step 5: Solve for x
    x = 6,890,493,196.14/112,067.60
  6. Step 6: Final answer
    x = 61,485.15

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Similar ratio
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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.