Home / 102,255.35-153,331.12-76,721.27

Finding the Fourth Proportional to 102,255.35, 153,331.12 and 76,721.27

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Solution

The fourth proportional to 102,255.35, 153,331.12 and 76,721.27 is: 115,042.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,255.35 : 153,331.12 = 76,721.27 : x
  2. Step 2: Convert to fraction form
    102,255.35/153,331.12 = 76,721.27/x
  3. Step 3: Cross multiply
    102,255.35x = 153,331.12 × 76,721.27
  4. Step 4: Simplify right side
    102,255.35x = 11,763,757,873.32
  5. Step 5: Solve for x
    x = 11,763,757,873.32/102,255.35
  6. Step 6: Final answer
    x = 115,042.96

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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.