Home / 208,925-313,512.03-75,815.65

Finding the Fourth Proportional to 208,925, 313,512.03 and 75,815.65

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Solution

The fourth proportional to 208,925, 313,512.03 and 75,815.65 is: 113,768.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,925 : 313,512.03 = 75,815.65 : x
  2. Step 2: Convert to fraction form
    208,925/313,512.03 = 75,815.65/x
  3. Step 3: Cross multiply
    208,925x = 313,512.03 × 75,815.65
  4. Step 4: Simplify right side
    208,925x = 23,769,116,769.71
  5. Step 5: Solve for x
    x = 23,769,116,769.71/208,925
  6. Step 6: Final answer
    x = 113,768.66

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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.