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Finding the Fourth Proportional to 143,681.86, 215,535.77 and 54,936.14

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Solution

The fourth proportional to 143,681.86, 215,535.77 and 54,936.14 is: 82,409.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,681.86 : 215,535.77 = 54,936.14 : x
  2. Step 2: Convert to fraction form
    143,681.86/215,535.77 = 54,936.14/x
  3. Step 3: Cross multiply
    143,681.86x = 215,535.77 × 54,936.14
  4. Step 4: Simplify right side
    143,681.86x = 11,840,702,295.39
  5. Step 5: Solve for x
    x = 11,840,702,295.39/143,681.86
  6. Step 6: Final answer
    x = 82,409.17

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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.