Home / 208,696.26-312,908.30-137,403.10

Finding the Fourth Proportional to 208,696.26, 312,908.30 and 137,403.10

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Solution

The fourth proportional to 208,696.26, 312,908.30 and 137,403.10 is: 206,015.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,696.26 : 312,908.30 = 137,403.10 : x
  2. Step 2: Convert to fraction form
    208,696.26/312,908.30 = 137,403.10/x
  3. Step 3: Cross multiply
    208,696.26x = 312,908.30 × 137,403.10
  4. Step 4: Simplify right side
    208,696.26x = 42,994,570,435.73
  5. Step 5: Solve for x
    x = 42,994,570,435.73/208,696.26
  6. Step 6: Final answer
    x = 206,015.05

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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.