Home / 207,336.40-311,004.60-67,109.20

Finding the Fourth Proportional to 207,336.40, 311,004.60 and 67,109.20

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Solution

The fourth proportional to 207,336.40, 311,004.60 and 67,109.20 is: 100,663.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,336.40 : 311,004.60 = 67,109.20 : x
  2. Step 2: Convert to fraction form
    207,336.40/311,004.60 = 67,109.20/x
  3. Step 3: Cross multiply
    207,336.40x = 311,004.60 × 67,109.20
  4. Step 4: Simplify right side
    207,336.40x = 20,871,269,902.32
  5. Step 5: Solve for x
    x = 20,871,269,902.32/207,336.40
  6. Step 6: Final answer
    x = 100,663.80

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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.