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Finding the Fourth Proportional to 101,558.52, 140,131.22 and 65,743.56

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Solution

The fourth proportional to 101,558.52, 140,131.22 and 65,743.56 is: 90,713.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,558.52 : 140,131.22 = 65,743.56 : x
  2. Step 2: Convert to fraction form
    101,558.52/140,131.22 = 65,743.56/x
  3. Step 3: Cross multiply
    101,558.52x = 140,131.22 × 65,743.56
  4. Step 4: Simplify right side
    101,558.52x = 9,212,725,269.94
  5. Step 5: Solve for x
    x = 9,212,725,269.94/101,558.52
  6. Step 6: Final answer
    x = 90,713.47

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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.