Home / 231,621.12-319,634.10-131,019.12

Finding the Fourth Proportional to 231,621.12, 319,634.10 and 131,019.12

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Solution

The fourth proportional to 231,621.12, 319,634.10 and 131,019.12 is: 180,804.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,621.12 : 319,634.10 = 131,019.12 : x
  2. Step 2: Convert to fraction form
    231,621.12/319,634.10 = 131,019.12/x
  3. Step 3: Cross multiply
    231,621.12x = 319,634.10 × 131,019.12
  4. Step 4: Simplify right side
    231,621.12x = 41,878,178,503.99
  5. Step 5: Solve for x
    x = 41,878,178,503.99/231,621.12
  6. Step 6: Final answer
    x = 180,804.66

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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.