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Finding the Fourth Proportional to 115,134.99, 172,619.10 and 48,538.56

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Solution

The fourth proportional to 115,134.99, 172,619.10 and 48,538.56 is: 72,772.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,134.99 : 172,619.10 = 48,538.56 : x
  2. Step 2: Convert to fraction form
    115,134.99/172,619.10 = 48,538.56/x
  3. Step 3: Cross multiply
    115,134.99x = 172,619.10 × 48,538.56
  4. Step 4: Simplify right side
    115,134.99x = 8,378,682,542.50
  5. Step 5: Solve for x
    x = 8,378,682,542.50/115,134.99
  6. Step 6: Final answer
    x = 72,772.69

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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.