Home / 121,916.32-168,236.62-68,192.04

Finding the Fourth Proportional to 121,916.32, 168,236.62 and 68,192.04

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Solution

The fourth proportional to 121,916.32, 168,236.62 and 68,192.04 is: 94,100.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,916.32 : 168,236.62 = 68,192.04 : x
  2. Step 2: Convert to fraction form
    121,916.32/168,236.62 = 68,192.04/x
  3. Step 3: Cross multiply
    121,916.32x = 168,236.62 × 68,192.04
  4. Step 4: Simplify right side
    121,916.32x = 11,472,398,320.50
  5. Step 5: Solve for x
    x = 11,472,398,320.50/121,916.32
  6. Step 6: Final answer
    x = 94,100.60

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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.