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Finding the Fourth Proportional to 127,745.75, 175,012.50 and 122,957.24

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Solution

The fourth proportional to 127,745.75, 175,012.50 and 122,957.24 is: 168,452.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,745.75 : 175,012.50 = 122,957.24 : x
  2. Step 2: Convert to fraction form
    127,745.75/175,012.50 = 122,957.24/x
  3. Step 3: Cross multiply
    127,745.75x = 175,012.50 × 122,957.24
  4. Step 4: Simplify right side
    127,745.75x = 21,519,053,649.82
  5. Step 5: Solve for x
    x = 21,519,053,649.82/127,745.75
  6. Step 6: Final answer
    x = 168,452.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.