Home / 143,670.38-198,071.87-100,591.92

Finding the Fourth Proportional to 143,670.38, 198,071.87 and 100,591.92

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Solution

The fourth proportional to 143,670.38, 198,071.87 and 100,591.92 is: 138,681.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,670.38 : 198,071.87 = 100,591.92 : x
  2. Step 2: Convert to fraction form
    143,670.38/198,071.87 = 100,591.92/x
  3. Step 3: Cross multiply
    143,670.38x = 198,071.87 × 100,591.92
  4. Step 4: Simplify right side
    143,670.38x = 19,924,429,198.33
  5. Step 5: Solve for x
    x = 19,924,429,198.33/143,670.38
  6. Step 6: Final answer
    x = 138,681.54

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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.