Home / 121,698.86-167,932.35-67,982.72

Finding the Fourth Proportional to 121,698.86, 167,932.35 and 67,982.72

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Solution

The fourth proportional to 121,698.86, 167,932.35 and 67,982.72 is: 93,809.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,698.86 : 167,932.35 = 67,982.72 : x
  2. Step 2: Convert to fraction form
    121,698.86/167,932.35 = 67,982.72/x
  3. Step 3: Cross multiply
    121,698.86x = 167,932.35 × 67,982.72
  4. Step 4: Simplify right side
    121,698.86x = 11,416,497,928.99
  5. Step 5: Solve for x
    x = 11,416,497,928.99/121,698.86
  6. Step 6: Final answer
    x = 93,809.41

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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.