Home / 143,254.03-197,485.26-100,680.43

Finding the Fourth Proportional to 143,254.03, 197,485.26 and 100,680.43

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Solution

The fourth proportional to 143,254.03, 197,485.26 and 100,680.43 is: 138,794.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,254.03 : 197,485.26 = 100,680.43 : x
  2. Step 2: Convert to fraction form
    143,254.03/197,485.26 = 100,680.43/x
  3. Step 3: Cross multiply
    143,254.03x = 197,485.26 × 100,680.43
  4. Step 4: Simplify right side
    143,254.03x = 19,882,900,895.46
  5. Step 5: Solve for x
    x = 19,882,900,895.46/143,254.03
  6. Step 6: Final answer
    x = 138,794.71

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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.