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Finding the Fourth Proportional to 112,620.40, 168,930.60 and 50,412.40

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Solution

The fourth proportional to 112,620.40, 168,930.60 and 50,412.40 is: 75,618.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,620.40 : 168,930.60 = 50,412.40 : x
  2. Step 2: Convert to fraction form
    112,620.40/168,930.60 = 50,412.40/x
  3. Step 3: Cross multiply
    112,620.40x = 168,930.60 × 50,412.40
  4. Step 4: Simplify right side
    112,620.40x = 8,516,196,979.44
  5. Step 5: Solve for x
    x = 8,516,196,979.44/112,620.40
  6. Step 6: Final answer
    x = 75,618.60

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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.