Home / 209,186.64-313,681.20-75,972.96

Finding the Fourth Proportional to 209,186.64, 313,681.20 and 75,972.96

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Solution

The fourth proportional to 209,186.64, 313,681.20 and 75,972.96 is: 113,923.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,186.64 : 313,681.20 = 75,972.96 : x
  2. Step 2: Convert to fraction form
    209,186.64/313,681.20 = 75,972.96/x
  3. Step 3: Cross multiply
    209,186.64x = 313,681.20 × 75,972.96
  4. Step 4: Simplify right side
    209,186.64x = 23,831,289,260.35
  5. Step 5: Solve for x
    x = 23,831,289,260.35/209,186.64
  6. Step 6: Final answer
    x = 113,923.57

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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.