Home / 120,163.88-180,256.11-31,417.24

Finding the Fourth Proportional to 120,163.88, 180,256.11 and 31,417.24

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Solution

The fourth proportional to 120,163.88, 180,256.11 and 31,417.24 is: 47,128.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,163.88 : 180,256.11 = 31,417.24 : x
  2. Step 2: Convert to fraction form
    120,163.88/180,256.11 = 31,417.24/x
  3. Step 3: Cross multiply
    120,163.88x = 180,256.11 × 31,417.24
  4. Step 4: Simplify right side
    120,163.88x = 5,663,149,834.19
  5. Step 5: Solve for x
    x = 5,663,149,834.19/120,163.88
  6. Step 6: Final answer
    x = 47,128.55

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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.