Home / 120,107.71-180,158.04-31,361.23

Finding the Fourth Proportional to 120,107.71, 180,158.04 and 31,361.23

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Solution

The fourth proportional to 120,107.71, 180,158.04 and 31,361.23 is: 47,040.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,107.71 : 180,158.04 = 31,361.23 : x
  2. Step 2: Convert to fraction form
    120,107.71/180,158.04 = 31,361.23/x
  3. Step 3: Cross multiply
    120,107.71x = 180,158.04 × 31,361.23
  4. Step 4: Simplify right side
    120,107.71x = 5,649,976,940.60
  5. Step 5: Solve for x
    x = 5,649,976,940.60/120,107.71
  6. Step 6: Final answer
    x = 47,040.92

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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.