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Finding the Fourth Proportional to 111,680.40, 167,528.70 and 67,211.40

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Solution

The fourth proportional to 111,680.40, 167,528.70 and 67,211.40 is: 100,821.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,680.40 : 167,528.70 = 67,211.40 : x
  2. Step 2: Convert to fraction form
    111,680.40/167,528.70 = 67,211.40/x
  3. Step 3: Cross multiply
    111,680.40x = 167,528.70 × 67,211.40
  4. Step 4: Simplify right side
    111,680.40x = 11,259,838,467.18
  5. Step 5: Solve for x
    x = 11,259,838,467.18/111,680.40
  6. Step 6: Final answer
    x = 100,821.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.