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Finding the Fourth Proportional to 124,468.25, 171,740.43 and 72,775.39

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Solution

The fourth proportional to 124,468.25, 171,740.43 and 72,775.39 is: 100,414.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,468.25 : 171,740.43 = 72,775.39 : x
  2. Step 2: Convert to fraction form
    124,468.25/171,740.43 = 72,775.39/x
  3. Step 3: Cross multiply
    124,468.25x = 171,740.43 × 72,775.39
  4. Step 4: Simplify right side
    124,468.25x = 12,498,475,976.98
  5. Step 5: Solve for x
    x = 12,498,475,976.98/124,468.25
  6. Step 6: Final answer
    x = 100,414.98

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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.