Home / 120,102.92-180,163.73-70,188.20

Finding the Fourth Proportional to 120,102.92, 180,163.73 and 70,188.20

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Solution

The fourth proportional to 120,102.92, 180,163.73 and 70,188.20 is: 105,287.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,102.92 : 180,163.73 = 70,188.20 : x
  2. Step 2: Convert to fraction form
    120,102.92/180,163.73 = 70,188.20/x
  3. Step 3: Cross multiply
    120,102.92x = 180,163.73 × 70,188.20
  4. Step 4: Simplify right side
    120,102.92x = 12,645,367,188.64
  5. Step 5: Solve for x
    x = 12,645,367,188.64/120,102.92
  6. Step 6: Final answer
    x = 105,287.76

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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.