Home / 121,406.14-167,646.25-76,161.90

Finding the Fourth Proportional to 121,406.14, 167,646.25 and 76,161.90

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Solution

The fourth proportional to 121,406.14, 167,646.25 and 76,161.90 is: 105,169.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,406.14 : 167,646.25 = 76,161.90 : x
  2. Step 2: Convert to fraction form
    121,406.14/167,646.25 = 76,161.90/x
  3. Step 3: Cross multiply
    121,406.14x = 167,646.25 × 76,161.90
  4. Step 4: Simplify right side
    121,406.14x = 12,768,256,183.68
  5. Step 5: Solve for x
    x = 12,768,256,183.68/121,406.14
  6. Step 6: Final answer
    x = 105,169.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.