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Finding the Fourth Proportional to 121,078.62, 167,084.30 and 66,625.70

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Solution

The fourth proportional to 121,078.62, 167,084.30 and 66,625.70 is: 91,941.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,078.62 : 167,084.30 = 66,625.70 : x
  2. Step 2: Convert to fraction form
    121,078.62/167,084.30 = 66,625.70/x
  3. Step 3: Cross multiply
    121,078.62x = 167,084.30 × 66,625.70
  4. Step 4: Simplify right side
    121,078.62x = 11,132,107,695.67
  5. Step 5: Solve for x
    x = 11,132,107,695.67/121,078.62
  6. Step 6: Final answer
    x = 91,941.15

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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.