Home / 131,784.40-181,906.86-80,101.34

Finding the Fourth Proportional to 131,784.40, 181,906.86 and 80,101.34

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Solution

The fourth proportional to 131,784.40, 181,906.86 and 80,101.34 is: 110,566.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,784.40 : 181,906.86 = 80,101.34 : x
  2. Step 2: Convert to fraction form
    131,784.40/181,906.86 = 80,101.34/x
  3. Step 3: Cross multiply
    131,784.40x = 181,906.86 × 80,101.34
  4. Step 4: Simplify right side
    131,784.40x = 14,570,983,241.19
  5. Step 5: Solve for x
    x = 14,570,983,241.19/131,784.40
  6. Step 6: Final answer
    x = 110,566.83

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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.