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Finding the Fourth Proportional to 111,607.92, 168,071.94 and 80,659.44

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Solution

The fourth proportional to 111,607.92, 168,071.94 and 80,659.44 is: 121,466.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,607.92 : 168,071.94 = 80,659.44 : x
  2. Step 2: Convert to fraction form
    111,607.92/168,071.94 = 80,659.44/x
  3. Step 3: Cross multiply
    111,607.92x = 168,071.94 × 80,659.44
  4. Step 4: Simplify right side
    111,607.92x = 13,556,588,560.11
  5. Step 5: Solve for x
    x = 13,556,588,560.11/111,607.92
  6. Step 6: Final answer
    x = 121,466.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.