Home / 120,511.20-180,775.77-40,549.35

Finding the Fourth Proportional to 120,511.20, 180,775.77 and 40,549.35

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Solution

The fourth proportional to 120,511.20, 180,775.77 and 40,549.35 is: 60,827.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,511.20 : 180,775.77 = 40,549.35 : x
  2. Step 2: Convert to fraction form
    120,511.20/180,775.77 = 40,549.35/x
  3. Step 3: Cross multiply
    120,511.20x = 180,775.77 × 40,549.35
  4. Step 4: Simplify right side
    120,511.20x = 7,330,339,969.25
  5. Step 5: Solve for x
    x = 7,330,339,969.25/120,511.20
  6. Step 6: Final answer
    x = 60,827.04

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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.