Home / 131,720.96-181,773.52-71,290.32

Finding the Fourth Proportional to 131,720.96, 181,773.52 and 71,290.32

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Solution

The fourth proportional to 131,720.96, 181,773.52 and 71,290.32 is: 98,379.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,720.96 : 181,773.52 = 71,290.32 : x
  2. Step 2: Convert to fraction form
    131,720.96/181,773.52 = 71,290.32/x
  3. Step 3: Cross multiply
    131,720.96x = 181,773.52 × 71,290.32
  4. Step 4: Simplify right side
    131,720.96x = 12,958,692,408.33
  5. Step 5: Solve for x
    x = 12,958,692,408.33/131,720.96
  6. Step 6: Final answer
    x = 98,379.88

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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.