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Finding the Fourth Proportional to 115,166.58, 172,745.73 and 40,286.58

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Solution

The fourth proportional to 115,166.58, 172,745.73 and 40,286.58 is: 60,428.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,166.58 : 172,745.73 = 40,286.58 : x
  2. Step 2: Convert to fraction form
    115,166.58/172,745.73 = 40,286.58/x
  3. Step 3: Cross multiply
    115,166.58x = 172,745.73 × 40,286.58
  4. Step 4: Simplify right side
    115,166.58x = 6,959,334,671.30
  5. Step 5: Solve for x
    x = 6,959,334,671.30/115,166.58
  6. Step 6: Final answer
    x = 60,428.42

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1.5x scale

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.