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Finding the Fourth Proportional to 121,079.62, 167,085.67 and 66,626.70

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Solution

The fourth proportional to 121,079.62, 167,085.67 and 66,626.70 is: 91,942.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,079.62 : 167,085.67 = 66,626.70 : x
  2. Step 2: Convert to fraction form
    121,079.62/167,085.67 = 66,626.70/x
  3. Step 3: Cross multiply
    121,079.62x = 167,085.67 × 66,626.70
  4. Step 4: Simplify right side
    121,079.62x = 11,132,366,809.39
  5. Step 5: Solve for x
    x = 11,132,366,809.39/121,079.62
  6. Step 6: Final answer
    x = 91,942.53

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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.