Home / 121,930.41-167,890.05-106,738.05

Finding the Fourth Proportional to 121,930.41, 167,890.05 and 106,738.05

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Solution

The fourth proportional to 121,930.41, 167,890.05 and 106,738.05 is: 146,971.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,930.41 : 167,890.05 = 106,738.05 : x
  2. Step 2: Convert to fraction form
    121,930.41/167,890.05 = 106,738.05/x
  3. Step 3: Cross multiply
    121,930.41x = 167,890.05 × 106,738.05
  4. Step 4: Simplify right side
    121,930.41x = 17,920,256,551.40
  5. Step 5: Solve for x
    x = 17,920,256,551.40/121,930.41
  6. Step 6: Final answer
    x = 146,971.18

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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.