Home / 205,880.10-309,338.55-131,036.10

Finding the Fourth Proportional to 205,880.10, 309,338.55 and 131,036.10

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Solution

The fourth proportional to 205,880.10, 309,338.55 and 131,036.10 is: 196,884.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,880.10 : 309,338.55 = 131,036.10 : x
  2. Step 2: Convert to fraction form
    205,880.10/309,338.55 = 131,036.10/x
  3. Step 3: Cross multiply
    205,880.10x = 309,338.55 × 131,036.10
  4. Step 4: Simplify right side
    205,880.10x = 40,534,517,171.66
  5. Step 5: Solve for x
    x = 40,534,517,171.66/205,880.10
  6. Step 6: Final answer
    x = 196,884.10

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1.5x scale

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.