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Finding the Fourth Proportional to 143,247.84, 214,811.01 and 68,281.26

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Solution

The fourth proportional to 143,247.84, 214,811.01 and 68,281.26 is: 102,392.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,247.84 : 214,811.01 = 68,281.26 : x
  2. Step 2: Convert to fraction form
    143,247.84/214,811.01 = 68,281.26/x
  3. Step 3: Cross multiply
    143,247.84x = 214,811.01 × 68,281.26
  4. Step 4: Simplify right side
    143,247.84x = 14,667,566,424.67
  5. Step 5: Solve for x
    x = 14,667,566,424.67/143,247.84
  6. Step 6: Final answer
    x = 102,392.93

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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.