Home / 231,811.66-319,878.57-131,209.66

Finding the Fourth Proportional to 231,811.66, 319,878.57 and 131,209.66

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Solution

The fourth proportional to 231,811.66, 319,878.57 and 131,209.66 is: 181,057.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,811.66 : 319,878.57 = 131,209.66 : x
  2. Step 2: Convert to fraction form
    231,811.66/319,878.57 = 131,209.66/x
  3. Step 3: Cross multiply
    231,811.66x = 319,878.57 × 131,209.66
  4. Step 4: Simplify right side
    231,811.66x = 41,971,158,103.33
  5. Step 5: Solve for x
    x = 41,971,158,103.33/231,811.66
  6. Step 6: Final answer
    x = 181,057.15

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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.