Home / 231,725.86-319,811.84-129,790.25

Finding the Fourth Proportional to 231,725.86, 319,811.84 and 129,790.25

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Solution

The fourth proportional to 231,725.86, 319,811.84 and 129,790.25 is: 179,127.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,725.86 : 319,811.84 = 129,790.25 : x
  2. Step 2: Convert to fraction form
    231,725.86/319,811.84 = 129,790.25/x
  3. Step 3: Cross multiply
    231,725.86x = 319,811.84 × 129,790.25
  4. Step 4: Simplify right side
    231,725.86x = 41,508,458,834.63
  5. Step 5: Solve for x
    x = 41,508,458,834.63/231,725.86
  6. Step 6: Final answer
    x = 179,127.43

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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.