Home / 120,168.78-180,263.46-31,422.14

Finding the Fourth Proportional to 120,168.78, 180,263.46 and 31,422.14

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Solution

The fourth proportional to 120,168.78, 180,263.46 and 31,422.14 is: 47,135.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,168.78 : 180,263.46 = 31,422.14 : x
  2. Step 2: Convert to fraction form
    120,168.78/180,263.46 = 31,422.14/x
  3. Step 3: Cross multiply
    120,168.78x = 180,263.46 × 31,422.14
  4. Step 4: Simplify right side
    120,168.78x = 5,664,262,775.69
  5. Step 5: Solve for x
    x = 5,664,262,775.69/120,168.78
  6. Step 6: Final answer
    x = 47,135.89

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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.