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Finding the Fourth Proportional to 112,201.20, 167,806.08 and 99,808.20

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Solution

The fourth proportional to 112,201.20, 167,806.08 and 99,808.20 is: 149,271.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,201.20 : 167,806.08 = 99,808.20 : x
  2. Step 2: Convert to fraction form
    112,201.20/167,806.08 = 99,808.20/x
  3. Step 3: Cross multiply
    112,201.20x = 167,806.08 × 99,808.20
  4. Step 4: Simplify right side
    112,201.20x = 16,748,422,793.86
  5. Step 5: Solve for x
    x = 16,748,422,793.86/112,201.20
  6. Step 6: Final answer
    x = 149,271.33

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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.