Home / 121,579.18-167,778.81-67,863.72

Finding the Fourth Proportional to 121,579.18, 167,778.81 and 67,863.72

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Solution

The fourth proportional to 121,579.18, 167,778.81 and 67,863.72 is: 93,651.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,579.18 : 167,778.81 = 67,863.72 : x
  2. Step 2: Convert to fraction form
    121,579.18/167,778.81 = 67,863.72/x
  3. Step 3: Cross multiply
    121,579.18x = 167,778.81 × 67,863.72
  4. Step 4: Simplify right side
    121,579.18x = 11,386,094,812.94
  5. Step 5: Solve for x
    x = 11,386,094,812.94/121,579.18
  6. Step 6: Final answer
    x = 93,651.68

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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.