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Finding the Fourth Proportional to 139,351.68, 208,949.76 and 45,832.32

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Solution

The fourth proportional to 139,351.68, 208,949.76 and 45,832.32 is: 68,722.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,351.68 : 208,949.76 = 45,832.32 : x
  2. Step 2: Convert to fraction form
    139,351.68/208,949.76 = 45,832.32/x
  3. Step 3: Cross multiply
    139,351.68x = 208,949.76 × 45,832.32
  4. Step 4: Simplify right side
    139,351.68x = 9,576,652,264.24
  5. Step 5: Solve for x
    x = 9,576,652,264.24/139,351.68
  6. Step 6: Final answer
    x = 68,722.90

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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.