Home / 205,969.14-309,471.35-131,122.71

Finding the Fourth Proportional to 205,969.14, 309,471.35 and 131,122.71

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Solution

The fourth proportional to 205,969.14, 309,471.35 and 131,122.71 is: 197,013.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,969.14 : 309,471.35 = 131,122.71 : x
  2. Step 2: Convert to fraction form
    205,969.14/309,471.35 = 131,122.71/x
  3. Step 3: Cross multiply
    205,969.14x = 309,471.35 × 131,122.71
  4. Step 4: Simplify right side
    205,969.14x = 40,578,721,423.74
  5. Step 5: Solve for x
    x = 40,578,721,423.74/205,969.14
  6. Step 6: Final answer
    x = 197,013.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.