Home / 120,163.31-180,255.20-31,416.67

Finding the Fourth Proportional to 120,163.31, 180,255.20 and 31,416.67

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Solution

The fourth proportional to 120,163.31, 180,255.20 and 31,416.67 is: 47,127.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,163.31 : 180,255.20 = 31,416.67 : x
  2. Step 2: Convert to fraction form
    120,163.31/180,255.20 = 31,416.67/x
  3. Step 3: Cross multiply
    120,163.31x = 180,255.20 × 31,416.67
  4. Step 4: Simplify right side
    120,163.31x = 5,663,018,134.18
  5. Step 5: Solve for x
    x = 5,663,018,134.18/120,163.31
  6. Step 6: Final answer
    x = 47,127.68

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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.