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Finding the Fourth Proportional to 143,396.76, 214,645.86 and 92,728.56

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Solution

The fourth proportional to 143,396.76, 214,645.86 and 92,728.56 is: 138,802.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,396.76 : 214,645.86 = 92,728.56 : x
  2. Step 2: Convert to fraction form
    143,396.76/214,645.86 = 92,728.56/x
  3. Step 3: Cross multiply
    143,396.76x = 214,645.86 × 92,728.56
  4. Step 4: Simplify right side
    143,396.76x = 19,903,801,507.76
  5. Step 5: Solve for x
    x = 19,903,801,507.76/143,396.76
  6. Step 6: Final answer
    x = 138,802.31

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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.