Home / 143,529.15-215,096.89-90,844.59

Finding the Fourth Proportional to 143,529.15, 215,096.89 and 90,844.59

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Solution

The fourth proportional to 143,529.15, 215,096.89 and 90,844.59 is: 136,142.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,529.15 : 215,096.89 = 90,844.59 : x
  2. Step 2: Convert to fraction form
    143,529.15/215,096.89 = 90,844.59/x
  3. Step 3: Cross multiply
    143,529.15x = 215,096.89 × 90,844.59
  4. Step 4: Simplify right side
    143,529.15x = 19,540,388,782.33
  5. Step 5: Solve for x
    x = 19,540,388,782.33/143,529.15
  6. Step 6: Final answer
    x = 136,142.30

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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.