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Finding the Fourth Proportional to 143,246.84, 214,809.51 and 68,280.26

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Solution

The fourth proportional to 143,246.84, 214,809.51 and 68,280.26 is: 102,391.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,246.84 : 214,809.51 = 68,280.26 : x
  2. Step 2: Convert to fraction form
    143,246.84/214,809.51 = 68,280.26/x
  3. Step 3: Cross multiply
    143,246.84x = 214,809.51 × 68,280.26
  4. Step 4: Simplify right side
    143,246.84x = 14,667,249,193.27
  5. Step 5: Solve for x
    x = 14,667,249,193.27/143,246.84
  6. Step 6: Final answer
    x = 102,391.43

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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.