Home / 143,820.32-198,379.40-95,421.20

Finding the Fourth Proportional to 143,820.32, 198,379.40 and 95,421.20

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Solution

The fourth proportional to 143,820.32, 198,379.40 and 95,421.20 is: 131,619.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,820.32 : 198,379.40 = 95,421.20 : x
  2. Step 2: Convert to fraction form
    143,820.32/198,379.40 = 95,421.20/x
  3. Step 3: Cross multiply
    143,820.32x = 198,379.40 × 95,421.20
  4. Step 4: Simplify right side
    143,820.32x = 18,929,600,403.28
  5. Step 5: Solve for x
    x = 18,929,600,403.28/143,820.32
  6. Step 6: Final answer
    x = 131,619.79

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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.