Home / 92,511.20-138,912.60-53,145.20

Finding the Fourth Proportional to 92,511.20, 138,912.60 and 53,145.20

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Solution

The fourth proportional to 92,511.20, 138,912.60 and 53,145.20 is: 79,801.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,511.20 : 138,912.60 = 53,145.20 : x
  2. Step 2: Convert to fraction form
    92,511.20/138,912.60 = 53,145.20/x
  3. Step 3: Cross multiply
    92,511.20x = 138,912.60 × 53,145.20
  4. Step 4: Simplify right side
    92,511.20x = 7,382,537,909.52
  5. Step 5: Solve for x
    x = 7,382,537,909.52/92,511.20
  6. Step 6: Final answer
    x = 79,801.56

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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.