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Finding the Fourth Proportional to 101,513, 140,149.38 and 66,246.44

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Solution

The fourth proportional to 101,513, 140,149.38 and 66,246.44 is: 91,460.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,513 : 140,149.38 = 66,246.44 : x
  2. Step 2: Convert to fraction form
    101,513/140,149.38 = 66,246.44/x
  3. Step 3: Cross multiply
    101,513x = 140,149.38 × 66,246.44
  4. Step 4: Simplify right side
    101,513x = 9,284,397,493.21
  5. Step 5: Solve for x
    x = 9,284,397,493.21/101,513
  6. Step 6: Final answer
    x = 91,460.18

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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.