Home / 123,720.31-185,578.85-30,226.87

Finding the Fourth Proportional to 123,720.31, 185,578.85 and 30,226.87

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Solution

The fourth proportional to 123,720.31, 185,578.85 and 30,226.87 is: 45,339.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,720.31 : 185,578.85 = 30,226.87 : x
  2. Step 2: Convert to fraction form
    123,720.31/185,578.85 = 30,226.87/x
  3. Step 3: Cross multiply
    123,720.31x = 185,578.85 × 30,226.87
  4. Step 4: Simplify right side
    123,720.31x = 5,609,467,911.21
  5. Step 5: Solve for x
    x = 5,609,467,911.21/123,720.31
  6. Step 6: Final answer
    x = 45,339.91

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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.