Home / 231,939.36-320,079.74-135,141.12

Finding the Fourth Proportional to 231,939.36, 320,079.74 and 135,141.12

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Solution

The fourth proportional to 231,939.36, 320,079.74 and 135,141.12 is: 186,496.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,939.36 : 320,079.74 = 135,141.12 : x
  2. Step 2: Convert to fraction form
    231,939.36/320,079.74 = 135,141.12/x
  3. Step 3: Cross multiply
    231,939.36x = 320,079.74 × 135,141.12
  4. Step 4: Simplify right side
    231,939.36x = 43,255,933,877.20
  5. Step 5: Solve for x
    x = 43,255,933,877.20/231,939.36
  6. Step 6: Final answer
    x = 186,496.74

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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.