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Finding the Fourth Proportional to 120,162.96, 180,069.12 and 67,587.12

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Solution

The fourth proportional to 120,162.96, 180,069.12 and 67,587.12 is: 101,282.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,162.96 : 180,069.12 = 67,587.12 : x
  2. Step 2: Convert to fraction form
    120,162.96/180,069.12 = 67,587.12/x
  3. Step 3: Cross multiply
    120,162.96x = 180,069.12 × 67,587.12
  4. Step 4: Simplify right side
    120,162.96x = 12,170,353,221.73
  5. Step 5: Solve for x
    x = 12,170,353,221.73/120,162.96
  6. Step 6: Final answer
    x = 101,282.07

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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.