Home / 231,985.41-320,134.59-135,183.21

Finding the Fourth Proportional to 231,985.41, 320,134.59 and 135,183.21

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Solution

The fourth proportional to 231,985.41, 320,134.59 and 135,183.21 is: 186,549.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,985.41 : 320,134.59 = 135,183.21 : x
  2. Step 2: Convert to fraction form
    231,985.41/320,134.59 = 135,183.21/x
  3. Step 3: Cross multiply
    231,985.41x = 320,134.59 × 135,183.21
  4. Step 4: Simplify right side
    231,985.41x = 43,276,821,508.23
  5. Step 5: Solve for x
    x = 43,276,821,508.23/231,985.41
  6. Step 6: Final answer
    x = 186,549.76

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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.