Home / 121,138.13-167,154.81-67,425.41

Finding the Fourth Proportional to 121,138.13, 167,154.81 and 67,425.41

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Solution

The fourth proportional to 121,138.13, 167,154.81 and 67,425.41 is: 93,038.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,138.13 : 167,154.81 = 67,425.41 : x
  2. Step 2: Convert to fraction form
    121,138.13/167,154.81 = 67,425.41/x
  3. Step 3: Cross multiply
    121,138.13x = 167,154.81 × 67,425.41
  4. Step 4: Simplify right side
    121,138.13x = 11,270,480,761.95
  5. Step 5: Solve for x
    x = 11,270,480,761.95/121,138.13
  6. Step 6: Final answer
    x = 93,038.26

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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.