Home / 121,503.07-167,679.09-67,792.78

Finding the Fourth Proportional to 121,503.07, 167,679.09 and 67,792.78

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Solution

The fourth proportional to 121,503.07, 167,679.09 and 67,792.78 is: 93,556.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,503.07 : 167,679.09 = 67,792.78 : x
  2. Step 2: Convert to fraction form
    121,503.07/167,679.09 = 67,792.78/x
  3. Step 3: Cross multiply
    121,503.07x = 167,679.09 × 67,792.78
  4. Step 4: Simplify right side
    121,503.07x = 11,367,430,481.61
  5. Step 5: Solve for x
    x = 11,367,430,481.61/121,503.07
  6. Step 6: Final answer
    x = 93,556.74

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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.