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Finding the Fourth Proportional to 208,167.45, 312,059.81 and 75,015.15

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Solution

The fourth proportional to 208,167.45, 312,059.81 and 75,015.15 is: 112,453.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,167.45 : 312,059.81 = 75,015.15 : x
  2. Step 2: Convert to fraction form
    208,167.45/312,059.81 = 75,015.15/x
  3. Step 3: Cross multiply
    208,167.45x = 312,059.81 × 75,015.15
  4. Step 4: Simplify right side
    208,167.45x = 23,409,213,081.05
  5. Step 5: Solve for x
    x = 23,409,213,081.05/208,167.45
  6. Step 6: Final answer
    x = 112,453.76

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1.5x scale

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.