Home / 143,540.46-197,880.56-100,966.86

Finding the Fourth Proportional to 143,540.46, 197,880.56 and 100,966.86

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Solution

The fourth proportional to 143,540.46, 197,880.56 and 100,966.86 is: 139,189.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,540.46 : 197,880.56 = 100,966.86 : x
  2. Step 2: Convert to fraction form
    143,540.46/197,880.56 = 100,966.86/x
  3. Step 3: Cross multiply
    143,540.46x = 197,880.56 × 100,966.86
  4. Step 4: Simplify right side
    143,540.46x = 19,979,378,798.24
  5. Step 5: Solve for x
    x = 19,979,378,798.24/143,540.46
  6. Step 6: Final answer
    x = 139,189.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.