Home / 231,971.46-320,105.45-136,459.70

Finding the Fourth Proportional to 231,971.46, 320,105.45 and 136,459.70

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Solution

The fourth proportional to 231,971.46, 320,105.45 and 136,459.70 is: 188,305.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,971.46 : 320,105.45 = 136,459.70 : x
  2. Step 2: Convert to fraction form
    231,971.46/320,105.45 = 136,459.70/x
  3. Step 3: Cross multiply
    231,971.46x = 320,105.45 × 136,459.70
  4. Step 4: Simplify right side
    231,971.46x = 43,681,493,675.37
  5. Step 5: Solve for x
    x = 43,681,493,675.37/231,971.46
  6. Step 6: Final answer
    x = 188,305.47

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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.