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Finding the Fourth Proportional to 101,991.36, 140,799.24 and 63,772.16

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Solution

The fourth proportional to 101,991.36, 140,799.24 and 63,772.16 is: 88,037.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,991.36 : 140,799.24 = 63,772.16 : x
  2. Step 2: Convert to fraction form
    101,991.36/140,799.24 = 63,772.16/x
  3. Step 3: Cross multiply
    101,991.36x = 140,799.24 × 63,772.16
  4. Step 4: Simplify right side
    101,991.36x = 8,979,071,661.16
  5. Step 5: Solve for x
    x = 8,979,071,661.16/101,991.36
  6. Step 6: Final answer
    x = 88,037.57

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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.