Home / 115,118.95-172,670-36,255.73

Finding the Fourth Proportional to 115,118.95, 172,670 and 36,255.73

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Solution

The fourth proportional to 115,118.95, 172,670 and 36,255.73 is: 54,380.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,118.95 : 172,670 = 36,255.73 : x
  2. Step 2: Convert to fraction form
    115,118.95/172,670 = 36,255.73/x
  3. Step 3: Cross multiply
    115,118.95x = 172,670 × 36,255.73
  4. Step 4: Simplify right side
    115,118.95x = 6,260,276,899.10
  5. Step 5: Solve for x
    x = 6,260,276,899.10/115,118.95
  6. Step 6: Final answer
    x = 54,380.94

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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.