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Finding the Fourth Proportional to 121,156.95, 167,194.80 and 67,441.89

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Solution

The fourth proportional to 121,156.95, 167,194.80 and 67,441.89 is: 93,068.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,156.95 : 167,194.80 = 67,441.89 : x
  2. Step 2: Convert to fraction form
    121,156.95/167,194.80 = 67,441.89/x
  3. Step 3: Cross multiply
    121,156.95x = 167,194.80 × 67,441.89
  4. Step 4: Simplify right side
    121,156.95x = 11,275,933,310.17
  5. Step 5: Solve for x
    x = 11,275,933,310.17/121,156.95
  6. Step 6: Final answer
    x = 93,068.81

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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.