Home / 204,165.40-306,253.02-77,789.20

Finding the Fourth Proportional to 204,165.40, 306,253.02 and 77,789.20

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Solution

The fourth proportional to 204,165.40, 306,253.02 and 77,789.20 is: 116,685.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,165.40 : 306,253.02 = 77,789.20 : x
  2. Step 2: Convert to fraction form
    204,165.40/306,253.02 = 77,789.20/x
  3. Step 3: Cross multiply
    204,165.40x = 306,253.02 × 77,789.20
  4. Step 4: Simplify right side
    204,165.40x = 23,823,177,423.38
  5. Step 5: Solve for x
    x = 23,823,177,423.38/204,165.40
  6. Step 6: Final answer
    x = 116,685.67

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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.