Home / 121,941.86-168,286.30-68,223.66

Finding the Fourth Proportional to 121,941.86, 168,286.30 and 68,223.66

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Solution

The fourth proportional to 121,941.86, 168,286.30 and 68,223.66 is: 94,152.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,941.86 : 168,286.30 = 68,223.66 : x
  2. Step 2: Convert to fraction form
    121,941.86/168,286.30 = 68,223.66/x
  3. Step 3: Cross multiply
    121,941.86x = 168,286.30 × 68,223.66
  4. Step 4: Simplify right side
    121,941.86x = 11,481,107,313.86
  5. Step 5: Solve for x
    x = 11,481,107,313.86/121,941.86
  6. Step 6: Final answer
    x = 94,152.31

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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.