Home / 231,976.48-320,054.34-129,987.76

Finding the Fourth Proportional to 231,976.48, 320,054.34 and 129,987.76

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Solution

The fourth proportional to 231,976.48, 320,054.34 and 129,987.76 is: 179,342.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,976.48 : 320,054.34 = 129,987.76 : x
  2. Step 2: Convert to fraction form
    231,976.48/320,054.34 = 129,987.76/x
  3. Step 3: Cross multiply
    231,976.48x = 320,054.34 × 129,987.76
  4. Step 4: Simplify right side
    231,976.48x = 41,603,146,734.88
  5. Step 5: Solve for x
    x = 41,603,146,734.88/231,976.48
  6. Step 6: Final answer
    x = 179,342.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.