Home / 120,021.62-180,145.43-60,899.72

Finding the Fourth Proportional to 120,021.62, 180,145.43 and 60,899.72

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Solution

The fourth proportional to 120,021.62, 180,145.43 and 60,899.72 is: 91,406.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,021.62 : 180,145.43 = 60,899.72 : x
  2. Step 2: Convert to fraction form
    120,021.62/180,145.43 = 60,899.72/x
  3. Step 3: Cross multiply
    120,021.62x = 180,145.43 × 60,899.72
  4. Step 4: Simplify right side
    120,021.62x = 10,970,806,246.28
  5. Step 5: Solve for x
    x = 10,970,806,246.28/120,021.62
  6. Step 6: Final answer
    x = 91,406.92

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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.