Home / 143,961.40-215,844.90-76,504.60

Finding the Fourth Proportional to 143,961.40, 215,844.90 and 76,504.60

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Solution

The fourth proportional to 143,961.40, 215,844.90 and 76,504.60 is: 114,705.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,961.40 : 215,844.90 = 76,504.60 : x
  2. Step 2: Convert to fraction form
    143,961.40/215,844.90 = 76,504.60/x
  3. Step 3: Cross multiply
    143,961.40x = 215,844.90 × 76,504.60
  4. Step 4: Simplify right side
    143,961.40x = 16,513,127,736.54
  5. Step 5: Solve for x
    x = 16,513,127,736.54/143,961.40
  6. Step 6: Final answer
    x = 114,705.25

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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.