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Finding the Fourth Proportional to 115,939.80, 174,120.90 and 101,424.60

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Solution

The fourth proportional to 115,939.80, 174,120.90 and 101,424.60 is: 152,321.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,939.80 : 174,120.90 = 101,424.60 : x
  2. Step 2: Convert to fraction form
    115,939.80/174,120.90 = 101,424.60/x
  3. Step 3: Cross multiply
    115,939.80x = 174,120.90 × 101,424.60
  4. Step 4: Simplify right side
    115,939.80x = 17,660,142,634.14
  5. Step 5: Solve for x
    x = 17,660,142,634.14/115,939.80
  6. Step 6: Final answer
    x = 152,321.66

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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.