Home / 120,271.89-180,404.07-57,137.43

Finding the Fourth Proportional to 120,271.89, 180,404.07 and 57,137.43

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Solution

The fourth proportional to 120,271.89, 180,404.07 and 57,137.43 is: 85,704.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,271.89 : 180,404.07 = 57,137.43 : x
  2. Step 2: Convert to fraction form
    120,271.89/180,404.07 = 57,137.43/x
  3. Step 3: Cross multiply
    120,271.89x = 180,404.07 × 57,137.43
  4. Step 4: Simplify right side
    120,271.89x = 10,307,824,921.34
  5. Step 5: Solve for x
    x = 10,307,824,921.34/120,271.89
  6. Step 6: Final answer
    x = 85,704.36

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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.