Home / 204,989.30-307,541.55-99,811.70

Finding the Fourth Proportional to 204,989.30, 307,541.55 and 99,811.70

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Solution

The fourth proportional to 204,989.30, 307,541.55 and 99,811.70 is: 149,745.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,989.30 : 307,541.55 = 99,811.70 : x
  2. Step 2: Convert to fraction form
    204,989.30/307,541.55 = 99,811.70/x
  3. Step 3: Cross multiply
    204,989.30x = 307,541.55 × 99,811.70
  4. Step 4: Simplify right side
    204,989.30x = 30,696,244,926.14
  5. Step 5: Solve for x
    x = 30,696,244,926.14/204,989.30
  6. Step 6: Final answer
    x = 149,745.60

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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.