Home / 208,742.88-313,162.08-90,433.92

Finding the Fourth Proportional to 208,742.88, 313,162.08 and 90,433.92

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Solution

The fourth proportional to 208,742.88, 313,162.08 and 90,433.92 is: 135,671.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,742.88 : 313,162.08 = 90,433.92 : x
  2. Step 2: Convert to fraction form
    208,742.88/313,162.08 = 90,433.92/x
  3. Step 3: Cross multiply
    208,742.88x = 313,162.08 × 90,433.92
  4. Step 4: Simplify right side
    208,742.88x = 28,320,474,489.75
  5. Step 5: Solve for x
    x = 28,320,474,489.75/208,742.88
  6. Step 6: Final answer
    x = 135,671.57

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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.