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Finding the Fourth Proportional to 143,148.40, 214,759.72 and 54,403.44

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Solution

The fourth proportional to 143,148.40, 214,759.72 and 54,403.44 is: 81,619.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,148.40 : 214,759.72 = 54,403.44 : x
  2. Step 2: Convert to fraction form
    143,148.40/214,759.72 = 54,403.44/x
  3. Step 3: Cross multiply
    143,148.40x = 214,759.72 × 54,403.44
  4. Step 4: Simplify right side
    143,148.40x = 11,683,667,541.44
  5. Step 5: Solve for x
    x = 11,683,667,541.44/143,148.40
  6. Step 6: Final answer
    x = 81,619.27

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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.