Home / 143,575.56-198,141.30-86,992.20

Finding the Fourth Proportional to 143,575.56, 198,141.30 and 86,992.20

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Solution

The fourth proportional to 143,575.56, 198,141.30 and 86,992.20 is: 120,053.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,575.56 : 198,141.30 = 86,992.20 : x
  2. Step 2: Convert to fraction form
    143,575.56/198,141.30 = 86,992.20/x
  3. Step 3: Cross multiply
    143,575.56x = 198,141.30 × 86,992.20
  4. Step 4: Simplify right side
    143,575.56x = 17,236,747,597.86
  5. Step 5: Solve for x
    x = 17,236,747,597.86/143,575.56
  6. Step 6: Final answer
    x = 120,053.49

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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.