Home / 143,221.28-214,830.56-87,076.89

Finding the Fourth Proportional to 143,221.28, 214,830.56 and 87,076.89

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Solution

The fourth proportional to 143,221.28, 214,830.56 and 87,076.89 is: 130,614.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,221.28 : 214,830.56 = 87,076.89 : x
  2. Step 2: Convert to fraction form
    143,221.28/214,830.56 = 87,076.89/x
  3. Step 3: Cross multiply
    143,221.28x = 214,830.56 × 87,076.89
  4. Step 4: Simplify right side
    143,221.28x = 18,706,776,606.37
  5. Step 5: Solve for x
    x = 18,706,776,606.37/143,221.28
  6. Step 6: Final answer
    x = 130,614.51

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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.