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Finding the Fourth Proportional to 143,698.48, 215,463.12 and 54,958.48

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Solution

The fourth proportional to 143,698.48, 215,463.12 and 54,958.48 is: 82,405.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,698.48 : 215,463.12 = 54,958.48 : x
  2. Step 2: Convert to fraction form
    143,698.48/215,463.12 = 54,958.48/x
  3. Step 3: Cross multiply
    143,698.48x = 215,463.12 × 54,958.48
  4. Step 4: Simplify right side
    143,698.48x = 11,841,525,571.26
  5. Step 5: Solve for x
    x = 11,841,525,571.26/143,698.48
  6. Step 6: Final answer
    x = 82,405.36

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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.