Home / 120,533.15-180,757.79-49,435.60

Finding the Fourth Proportional to 120,533.15, 180,757.79 and 49,435.60

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Solution

The fourth proportional to 120,533.15, 180,757.79 and 49,435.60 is: 74,136.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,533.15 : 180,757.79 = 49,435.60 : x
  2. Step 2: Convert to fraction form
    120,533.15/180,757.79 = 49,435.60/x
  3. Step 3: Cross multiply
    120,533.15x = 180,757.79 × 49,435.60
  4. Step 4: Simplify right side
    120,533.15x = 8,935,868,899.54
  5. Step 5: Solve for x
    x = 8,935,868,899.54/120,533.15
  6. Step 6: Final answer
    x = 74,136.20

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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.