Home / 208,756.85-312,856.43-108,707.27

Finding the Fourth Proportional to 208,756.85, 312,856.43 and 108,707.27

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Solution

The fourth proportional to 208,756.85, 312,856.43 and 108,707.27 is: 162,915.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,756.85 : 312,856.43 = 108,707.27 : x
  2. Step 2: Convert to fraction form
    208,756.85/312,856.43 = 108,707.27/x
  3. Step 3: Cross multiply
    208,756.85x = 312,856.43 × 108,707.27
  4. Step 4: Simplify right side
    208,756.85x = 34,009,766,299.43
  5. Step 5: Solve for x
    x = 34,009,766,299.43/208,756.85
  6. Step 6: Final answer
    x = 162,915.69

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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.