Home / 120,271.62-180,403.70-57,137.20

Finding the Fourth Proportional to 120,271.62, 180,403.70 and 57,137.20

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Solution

The fourth proportional to 120,271.62, 180,403.70 and 57,137.20 is: 85,704.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,271.62 : 180,403.70 = 57,137.20 : x
  2. Step 2: Convert to fraction form
    120,271.62/180,403.70 = 57,137.20/x
  3. Step 3: Cross multiply
    120,271.62x = 180,403.70 × 57,137.20
  4. Step 4: Simplify right side
    120,271.62x = 10,307,762,287.64
  5. Step 5: Solve for x
    x = 10,307,762,287.64/120,271.62
  6. Step 6: Final answer
    x = 85,704.03

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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.