Home / 120,091.42-180,137.13-31,344.15

Finding the Fourth Proportional to 120,091.42, 180,137.13 and 31,344.15

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Solution

The fourth proportional to 120,091.42, 180,137.13 and 31,344.15 is: 47,016.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,091.42 : 180,137.13 = 31,344.15 : x
  2. Step 2: Convert to fraction form
    120,091.42/180,137.13 = 31,344.15/x
  3. Step 3: Cross multiply
    120,091.42x = 180,137.13 × 31,344.15
  4. Step 4: Simplify right side
    120,091.42x = 5,646,245,223.29
  5. Step 5: Solve for x
    x = 5,646,245,223.29/120,091.42
  6. Step 6: Final answer
    x = 47,016.23

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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.