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Finding the Fourth Proportional to 121,965.74, 168,304.56 and 67,514.22

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Solution

The fourth proportional to 121,965.74, 168,304.56 and 67,514.22 is: 93,165.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,965.74 : 168,304.56 = 67,514.22 : x
  2. Step 2: Convert to fraction form
    121,965.74/168,304.56 = 67,514.22/x
  3. Step 3: Cross multiply
    121,965.74x = 168,304.56 × 67,514.22
  4. Step 4: Simplify right side
    121,965.74x = 11,362,951,090.84
  5. Step 5: Solve for x
    x = 11,362,951,090.84/121,965.74
  6. Step 6: Final answer
    x = 93,165.11

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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.