Home / 143,997.40-215,898.90-76,540.60

Finding the Fourth Proportional to 143,997.40, 215,898.90 and 76,540.60

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Solution

The fourth proportional to 143,997.40, 215,898.90 and 76,540.60 is: 114,759.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,997.40 : 215,898.90 = 76,540.60 : x
  2. Step 2: Convert to fraction form
    143,997.40/215,898.90 = 76,540.60/x
  3. Step 3: Cross multiply
    143,997.40x = 215,898.90 × 76,540.60
  4. Step 4: Simplify right side
    143,997.40x = 16,525,031,345.34
  5. Step 5: Solve for x
    x = 16,525,031,345.34/143,997.40
  6. Step 6: Final answer
    x = 114,759.23

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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.