Home / 143,095.41-214,647.71-71,979.21

Finding the Fourth Proportional to 143,095.41, 214,647.71 and 71,979.21

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Solution

The fourth proportional to 143,095.41, 214,647.71 and 71,979.21 is: 107,971.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,095.41 : 214,647.71 = 71,979.21 : x
  2. Step 2: Convert to fraction form
    143,095.41/214,647.71 = 71,979.21/x
  3. Step 3: Cross multiply
    143,095.41x = 214,647.71 × 71,979.21
  4. Step 4: Simplify right side
    143,095.41x = 15,450,172,234.21
  5. Step 5: Solve for x
    x = 15,450,172,234.21/143,095.41
  6. Step 6: Final answer
    x = 107,971.12

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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.