Home / 120,112.20-180,017.10-60,964.20

Finding the Fourth Proportional to 120,112.20, 180,017.10 and 60,964.20

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Solution

The fourth proportional to 120,112.20, 180,017.10 and 60,964.20 is: 91,369.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,112.20 : 180,017.10 = 60,964.20 : x
  2. Step 2: Convert to fraction form
    120,112.20/180,017.10 = 60,964.20/x
  3. Step 3: Cross multiply
    120,112.20x = 180,017.10 × 60,964.20
  4. Step 4: Simplify right side
    120,112.20x = 10,974,598,487.82
  5. Step 5: Solve for x
    x = 10,974,598,487.82/120,112.20
  6. Step 6: Final answer
    x = 91,369.56

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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.