Home / 120,273.62-180,406.70-57,139.20

Finding the Fourth Proportional to 120,273.62, 180,406.70 and 57,139.20

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Solution

The fourth proportional to 120,273.62, 180,406.70 and 57,139.20 is: 85,707.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,273.62 : 180,406.70 = 57,139.20 : x
  2. Step 2: Convert to fraction form
    120,273.62/180,406.70 = 57,139.20/x
  3. Step 3: Cross multiply
    120,273.62x = 180,406.70 × 57,139.20
  4. Step 4: Simplify right side
    120,273.62x = 10,308,294,512.64
  5. Step 5: Solve for x
    x = 10,308,294,512.64/120,273.62
  6. Step 6: Final answer
    x = 85,707.03

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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.