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Finding the Fourth Proportional to 121,424.88, 167,467.32 and 101,968.80

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Solution

The fourth proportional to 121,424.88, 167,467.32 and 101,968.80 is: 140,633.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,424.88 : 167,467.32 = 101,968.80 : x
  2. Step 2: Convert to fraction form
    121,424.88/167,467.32 = 101,968.80/x
  3. Step 3: Cross multiply
    121,424.88x = 167,467.32 × 101,968.80
  4. Step 4: Simplify right side
    121,424.88x = 17,076,441,659.62
  5. Step 5: Solve for x
    x = 17,076,441,659.62/121,424.88
  6. Step 6: Final answer
    x = 140,633.79

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1.5x scale

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.