Home / 82,556.20-123,834.36-78,349

Finding the Fourth Proportional to 82,556.20, 123,834.36 and 78,349

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Solution

The fourth proportional to 82,556.20, 123,834.36 and 78,349 is: 117,523.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,556.20 : 123,834.36 = 78,349 : x
  2. Step 2: Convert to fraction form
    82,556.20/123,834.36 = 78,349/x
  3. Step 3: Cross multiply
    82,556.20x = 123,834.36 × 78,349
  4. Step 4: Simplify right side
    82,556.20x = 9,702,298,271.64
  5. Step 5: Solve for x
    x = 9,702,298,271.64/82,556.20
  6. Step 6: Final answer
    x = 117,523.56

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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.