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Finding the Fourth Proportional to 115,375, 173,080.79 and 48,815.63

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Solution

The fourth proportional to 115,375, 173,080.79 and 48,815.63 is: 73,231.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,375 : 173,080.79 = 48,815.63 : x
  2. Step 2: Convert to fraction form
    115,375/173,080.79 = 48,815.63/x
  3. Step 3: Cross multiply
    115,375x = 173,080.79 × 48,815.63
  4. Step 4: Simplify right side
    115,375x = 8,449,047,804.75
  5. Step 5: Solve for x
    x = 8,449,047,804.75/115,375
  6. Step 6: Final answer
    x = 73,231.18

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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.