Home / 121,117.47-167,139.77-67,402.41

Finding the Fourth Proportional to 121,117.47, 167,139.77 and 67,402.41

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Solution

The fourth proportional to 121,117.47, 167,139.77 and 67,402.41 is: 93,014.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,117.47 : 167,139.77 = 67,402.41 : x
  2. Step 2: Convert to fraction form
    121,117.47/167,139.77 = 67,402.41/x
  3. Step 3: Cross multiply
    121,117.47x = 167,139.77 × 67,402.41
  4. Step 4: Simplify right side
    121,117.47x = 11,265,622,469.15
  5. Step 5: Solve for x
    x = 11,265,622,469.15/121,117.47
  6. Step 6: Final answer
    x = 93,014.02

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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.