Home / 120,453.29-180,609.90-45,579.22

Finding the Fourth Proportional to 120,453.29, 180,609.90 and 45,579.22

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Solution

The fourth proportional to 120,453.29, 180,609.90 and 45,579.22 is: 68,342.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,453.29 : 180,609.90 = 45,579.22 : x
  2. Step 2: Convert to fraction form
    120,453.29/180,609.90 = 45,579.22/x
  3. Step 3: Cross multiply
    120,453.29x = 180,609.90 × 45,579.22
  4. Step 4: Simplify right side
    120,453.29x = 8,232,057,743.83
  5. Step 5: Solve for x
    x = 8,232,057,743.83/120,453.29
  6. Step 6: Final answer
    x = 68,342.32

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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.