Home / 143,154.54-214,688.07-68,235.21

Finding the Fourth Proportional to 143,154.54, 214,688.07 and 68,235.21

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Solution

The fourth proportional to 143,154.54, 214,688.07 and 68,235.21 is: 102,331.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,154.54 : 214,688.07 = 68,235.21 : x
  2. Step 2: Convert to fraction form
    143,154.54/214,688.07 = 68,235.21/x
  3. Step 3: Cross multiply
    143,154.54x = 214,688.07 × 68,235.21
  4. Step 4: Simplify right side
    143,154.54x = 14,649,285,540.94
  5. Step 5: Solve for x
    x = 14,649,285,540.94/143,154.54
  6. Step 6: Final answer
    x = 102,331.97

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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.