Home / 207,621.40-311,316.90-89,272.60

Finding the Fourth Proportional to 207,621.40, 311,316.90 and 89,272.60

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Solution

The fourth proportional to 207,621.40, 311,316.90 and 89,272.60 is: 133,859.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,621.40 : 311,316.90 = 89,272.60 : x
  2. Step 2: Convert to fraction form
    207,621.40/311,316.90 = 89,272.60/x
  3. Step 3: Cross multiply
    207,621.40x = 311,316.90 × 89,272.60
  4. Step 4: Simplify right side
    207,621.40x = 27,792,069,086.94
  5. Step 5: Solve for x
    x = 27,792,069,086.94/207,621.40
  6. Step 6: Final answer
    x = 133,859.37

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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.