Home / 112,135.64-167,860-72,614.12

Finding the Fourth Proportional to 112,135.64, 167,860 and 72,614.12

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Solution

The fourth proportional to 112,135.64, 167,860 and 72,614.12 is: 108,698.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,135.64 : 167,860 = 72,614.12 : x
  2. Step 2: Convert to fraction form
    112,135.64/167,860 = 72,614.12/x
  3. Step 3: Cross multiply
    112,135.64x = 167,860 × 72,614.12
  4. Step 4: Simplify right side
    112,135.64x = 12,189,006,183.20
  5. Step 5: Solve for x
    x = 12,189,006,183.20/112,135.64
  6. Step 6: Final answer
    x = 108,698.77

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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.