Home / 143,716.62-215,685.60-115,705.20

Finding the Fourth Proportional to 143,716.62, 215,685.60 and 115,705.20

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Solution

The fourth proportional to 143,716.62, 215,685.60 and 115,705.20 is: 173,646.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,716.62 : 215,685.60 = 115,705.20 : x
  2. Step 2: Convert to fraction form
    143,716.62/215,685.60 = 115,705.20/x
  3. Step 3: Cross multiply
    143,716.62x = 215,685.60 × 115,705.20
  4. Step 4: Simplify right side
    143,716.62x = 24,955,945,485.12
  5. Step 5: Solve for x
    x = 24,955,945,485.12/143,716.62
  6. Step 6: Final answer
    x = 173,646.90

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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.