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Finding the Fourth Proportional to 207,000.26, 310,500.39 and 66,758.88

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Solution

The fourth proportional to 207,000.26, 310,500.39 and 66,758.88 is: 100,138.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,000.26 : 310,500.39 = 66,758.88 : x
  2. Step 2: Convert to fraction form
    207,000.26/310,500.39 = 66,758.88/x
  3. Step 3: Cross multiply
    207,000.26x = 310,500.39 × 66,758.88
  4. Step 4: Simplify right side
    207,000.26x = 20,728,657,942.17
  5. Step 5: Solve for x
    x = 20,728,657,942.17/207,000.26
  6. Step 6: Final answer
    x = 100,138.32

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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.