Home / 131,771.46-181,770.84-78,004.08

Finding the Fourth Proportional to 131,771.46, 181,770.84 and 78,004.08

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Solution

The fourth proportional to 131,771.46, 181,770.84 and 78,004.08 is: 107,601.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,771.46 : 181,770.84 = 78,004.08 : x
  2. Step 2: Convert to fraction form
    131,771.46/181,770.84 = 78,004.08/x
  3. Step 3: Cross multiply
    131,771.46x = 181,770.84 × 78,004.08
  4. Step 4: Simplify right side
    131,771.46x = 14,178,867,145.03
  5. Step 5: Solve for x
    x = 14,178,867,145.03/131,771.46
  6. Step 6: Final answer
    x = 107,601.96

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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.