Home / 121,755.32-168,021.94-68,040.34

Finding the Fourth Proportional to 121,755.32, 168,021.94 and 68,040.34

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Solution

The fourth proportional to 121,755.32, 168,021.94 and 68,040.34 is: 93,895.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,755.32 : 168,021.94 = 68,040.34 : x
  2. Step 2: Convert to fraction form
    121,755.32/168,021.94 = 68,040.34/x
  3. Step 3: Cross multiply
    121,755.32x = 168,021.94 × 68,040.34
  4. Step 4: Simplify right side
    121,755.32x = 11,432,269,925.06
  5. Step 5: Solve for x
    x = 11,432,269,925.06/121,755.32
  6. Step 6: Final answer
    x = 93,895.44

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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.