Home / 142,828.12-214,370.66-76,325.09

Finding the Fourth Proportional to 142,828.12, 214,370.66 and 76,325.09

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Solution

The fourth proportional to 142,828.12, 214,370.66 and 76,325.09 is: 114,556.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,828.12 : 214,370.66 = 76,325.09 : x
  2. Step 2: Convert to fraction form
    142,828.12/214,370.66 = 76,325.09/x
  3. Step 3: Cross multiply
    142,828.12x = 214,370.66 × 76,325.09
  4. Step 4: Simplify right side
    142,828.12x = 16,361,859,917.86
  5. Step 5: Solve for x
    x = 16,361,859,917.86/142,828.12
  6. Step 6: Final answer
    x = 114,556.29

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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.