Home / 121,643.43-167,946.92-108,874.50

Finding the Fourth Proportional to 121,643.43, 167,946.92 and 108,874.50

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Solution

The fourth proportional to 121,643.43, 167,946.92 and 108,874.50 is: 150,317.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,643.43 : 167,946.92 = 108,874.50 : x
  2. Step 2: Convert to fraction form
    121,643.43/167,946.92 = 108,874.50/x
  3. Step 3: Cross multiply
    121,643.43x = 167,946.92 × 108,874.50
  4. Step 4: Simplify right side
    121,643.43x = 18,285,136,941.54
  5. Step 5: Solve for x
    x = 18,285,136,941.54/121,643.43
  6. Step 6: Final answer
    x = 150,317.51

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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.