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Finding the Fourth Proportional to 123,613.22, 185,228.01 and 85,736.44

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Solution

The fourth proportional to 123,613.22, 185,228.01 and 85,736.44 is: 128,471.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,613.22 : 185,228.01 = 85,736.44 : x
  2. Step 2: Convert to fraction form
    123,613.22/185,228.01 = 85,736.44/x
  3. Step 3: Cross multiply
    123,613.22x = 185,228.01 × 85,736.44
  4. Step 4: Simplify right side
    123,613.22x = 15,880,790,397.22
  5. Step 5: Solve for x
    x = 15,880,790,397.22/123,613.22
  6. Step 6: Final answer
    x = 128,471.62

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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.