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Finding the Fourth Proportional to 143,252.28, 214,878.42 and 54,485.28

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Solution

The fourth proportional to 143,252.28, 214,878.42 and 54,485.28 is: 81,727.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,252.28 : 214,878.42 = 54,485.28 : x
  2. Step 2: Convert to fraction form
    143,252.28/214,878.42 = 54,485.28/x
  3. Step 3: Cross multiply
    143,252.28x = 214,878.42 × 54,485.28
  4. Step 4: Simplify right side
    143,252.28x = 11,707,710,879.66
  5. Step 5: Solve for x
    x = 11,707,710,879.66/143,252.28
  6. Step 6: Final answer
    x = 81,727.92

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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.