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Finding the Fourth Proportional to 115,940.80, 174,122.40 and 101,425.60

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Solution

The fourth proportional to 115,940.80, 174,122.40 and 101,425.60 is: 152,323.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,940.80 : 174,122.40 = 101,425.60 : x
  2. Step 2: Convert to fraction form
    115,940.80/174,122.40 = 101,425.60/x
  3. Step 3: Cross multiply
    115,940.80x = 174,122.40 × 101,425.60
  4. Step 4: Simplify right side
    115,940.80x = 17,660,468,893.44
  5. Step 5: Solve for x
    x = 17,660,468,893.44/115,940.80
  6. Step 6: Final answer
    x = 152,323.16

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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.