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Finding the Fourth Proportional to 101,637.36, 140,229.12 and 65,770.56

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Solution

The fourth proportional to 101,637.36, 140,229.12 and 65,770.56 is: 90,743.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,637.36 : 140,229.12 = 65,770.56 : x
  2. Step 2: Convert to fraction form
    101,637.36/140,229.12 = 65,770.56/x
  3. Step 3: Cross multiply
    101,637.36x = 140,229.12 × 65,770.56
  4. Step 4: Simplify right side
    101,637.36x = 9,222,947,750.71
  5. Step 5: Solve for x
    x = 9,222,947,750.71/101,637.36
  6. Step 6: Final answer
    x = 90,743.68

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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.