Home / 207,961.16-311,963.60-67,730.72

Finding the Fourth Proportional to 207,961.16, 311,963.60 and 67,730.72

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Solution

The fourth proportional to 207,961.16, 311,963.60 and 67,730.72 is: 101,603.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,961.16 : 311,963.60 = 67,730.72 : x
  2. Step 2: Convert to fraction form
    207,961.16/311,963.60 = 67,730.72/x
  3. Step 3: Cross multiply
    207,961.16x = 311,963.60 × 67,730.72
  4. Step 4: Simplify right side
    207,961.16x = 21,129,517,851.30
  5. Step 5: Solve for x
    x = 21,129,517,851.30/207,961.16
  6. Step 6: Final answer
    x = 101,603.20

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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.