Home / 231,988.49-320,128.96-136,476.73

Finding the Fourth Proportional to 231,988.49, 320,128.96 and 136,476.73

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Solution

The fourth proportional to 231,988.49, 320,128.96 and 136,476.73 is: 188,328.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,988.49 : 320,128.96 = 136,476.73 : x
  2. Step 2: Convert to fraction form
    231,988.49/320,128.96 = 136,476.73/x
  3. Step 3: Cross multiply
    231,988.49x = 320,128.96 × 136,476.73
  4. Step 4: Simplify right side
    231,988.49x = 43,690,153,953.96
  5. Step 5: Solve for x
    x = 43,690,153,953.96/231,988.49
  6. Step 6: Final answer
    x = 188,328.97

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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.