Home / 81,165.24-111,882.06-79,590.60

Finding the Fourth Proportional to 81,165.24, 111,882.06 and 79,590.60

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Solution

The fourth proportional to 81,165.24, 111,882.06 and 79,590.60 is: 109,711.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,165.24 : 111,882.06 = 79,590.60 : x
  2. Step 2: Convert to fraction form
    81,165.24/111,882.06 = 79,590.60/x
  3. Step 3: Cross multiply
    81,165.24x = 111,882.06 × 79,590.60
  4. Step 4: Simplify right side
    81,165.24x = 8,904,760,284.64
  5. Step 5: Solve for x
    x = 8,904,760,284.64/81,165.24
  6. Step 6: Final answer
    x = 109,711.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.