Home / 207,719.20-311,783.60-102,656.80

Finding the Fourth Proportional to 207,719.20, 311,783.60 and 102,656.80

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Solution

The fourth proportional to 207,719.20, 311,783.60 and 102,656.80 is: 154,086.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,719.20 : 311,783.60 = 102,656.80 : x
  2. Step 2: Convert to fraction form
    207,719.20/311,783.60 = 102,656.80/x
  3. Step 3: Cross multiply
    207,719.20x = 311,783.60 × 102,656.80
  4. Step 4: Simplify right side
    207,719.20x = 32,006,706,668.48
  5. Step 5: Solve for x
    x = 32,006,706,668.48/207,719.20
  6. Step 6: Final answer
    x = 154,086.41

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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.