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Finding the Fourth Proportional to 121,632.25, 167,832.48 and 67,908.64

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Solution

The fourth proportional to 121,632.25, 167,832.48 and 67,908.64 is: 93,702.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,632.25 : 167,832.48 = 67,908.64 : x
  2. Step 2: Convert to fraction form
    121,632.25/167,832.48 = 67,908.64/x
  3. Step 3: Cross multiply
    121,632.25x = 167,832.48 × 67,908.64
  4. Step 4: Simplify right side
    121,632.25x = 11,397,275,464.63
  5. Step 5: Solve for x
    x = 11,397,275,464.63/121,632.25
  6. Step 6: Final answer
    x = 93,702.74

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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.