Home / 139,310.40-208,997.12-45,816.96

Finding the Fourth Proportional to 139,310.40, 208,997.12 and 45,816.96

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Solution

The fourth proportional to 139,310.40, 208,997.12 and 45,816.96 is: 68,735.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,310.40 : 208,997.12 = 45,816.96 : x
  2. Step 2: Convert to fraction form
    139,310.40/208,997.12 = 45,816.96/x
  3. Step 3: Cross multiply
    139,310.40x = 208,997.12 × 45,816.96
  4. Step 4: Simplify right side
    139,310.40x = 9,575,612,687.16
  5. Step 5: Solve for x
    x = 9,575,612,687.16/139,310.40
  6. Step 6: Final answer
    x = 68,735.81

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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.