Home / 121,694.70-167,938.68-67,979.72

Finding the Fourth Proportional to 121,694.70, 167,938.68 and 67,979.72

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Solution

The fourth proportional to 121,694.70, 167,938.68 and 67,979.72 is: 93,812.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,694.70 : 167,938.68 = 67,979.72 : x
  2. Step 2: Convert to fraction form
    121,694.70/167,938.68 = 67,979.72/x
  3. Step 3: Cross multiply
    121,694.70x = 167,938.68 × 67,979.72
  4. Step 4: Simplify right side
    121,694.70x = 11,416,424,173.69
  5. Step 5: Solve for x
    x = 11,416,424,173.69/121,694.70
  6. Step 6: Final answer
    x = 93,812.01

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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.