Home / 207,664.45-311,506.57-100,921.24

Finding the Fourth Proportional to 207,664.45, 311,506.57 and 100,921.24

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Solution

The fourth proportional to 207,664.45, 311,506.57 and 100,921.24 is: 151,386.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,664.45 : 311,506.57 = 100,921.24 : x
  2. Step 2: Convert to fraction form
    207,664.45/311,506.57 = 100,921.24/x
  3. Step 3: Cross multiply
    207,664.45x = 311,506.57 × 100,921.24
  4. Step 4: Simplify right side
    207,664.45x = 31,437,627,755.01
  5. Step 5: Solve for x
    x = 31,437,627,755.01/207,664.45
  6. Step 6: Final answer
    x = 151,386.66

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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.