Home / 205,787.59-308,470.88-139,234.75

Finding the Fourth Proportional to 205,787.59, 308,470.88 and 139,234.75

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Solution

The fourth proportional to 205,787.59, 308,470.88 and 139,234.75 is: 208,709.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,787.59 : 308,470.88 = 139,234.75 : x
  2. Step 2: Convert to fraction form
    205,787.59/308,470.88 = 139,234.75/x
  3. Step 3: Cross multiply
    205,787.59x = 308,470.88 × 139,234.75
  4. Step 4: Simplify right side
    205,787.59x = 42,949,865,435.99
  5. Step 5: Solve for x
    x = 42,949,865,435.99/205,787.59
  6. Step 6: Final answer
    x = 208,709.70

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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.