Home / 120,119.70-180,179.55-75,942.30

Finding the Fourth Proportional to 120,119.70, 180,179.55 and 75,942.30

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Solution

The fourth proportional to 120,119.70, 180,179.55 and 75,942.30 is: 113,913.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,119.70 : 180,179.55 = 75,942.30 : x
  2. Step 2: Convert to fraction form
    120,119.70/180,179.55 = 75,942.30/x
  3. Step 3: Cross multiply
    120,119.70x = 180,179.55 × 75,942.30
  4. Step 4: Simplify right side
    120,119.70x = 13,683,249,439.97
  5. Step 5: Solve for x
    x = 13,683,249,439.97/120,119.70
  6. Step 6: Final answer
    x = 113,913.45

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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.