Home / 207,925.11-311,768.28-81,417.24

Finding the Fourth Proportional to 207,925.11, 311,768.28 and 81,417.24

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Solution

The fourth proportional to 207,925.11, 311,768.28 and 81,417.24 is: 122,079.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,925.11 : 311,768.28 = 81,417.24 : x
  2. Step 2: Convert to fraction form
    207,925.11/311,768.28 = 81,417.24/x
  3. Step 3: Cross multiply
    207,925.11x = 311,768.28 × 81,417.24
  4. Step 4: Simplify right side
    207,925.11x = 25,383,311,318.31
  5. Step 5: Solve for x
    x = 25,383,311,318.31/207,925.11
  6. Step 6: Final answer
    x = 122,079.10

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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.