Home / 131,771.09-181,770.32-78,003.71

Finding the Fourth Proportional to 131,771.09, 181,770.32 and 78,003.71

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Solution

The fourth proportional to 131,771.09, 181,770.32 and 78,003.71 is: 107,601.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,771.09 : 181,770.32 = 78,003.71 : x
  2. Step 2: Convert to fraction form
    131,771.09/181,770.32 = 78,003.71/x
  3. Step 3: Cross multiply
    131,771.09x = 181,770.32 × 78,003.71
  4. Step 4: Simplify right side
    131,771.09x = 14,178,758,614.04
  5. Step 5: Solve for x
    x = 14,178,758,614.04/131,771.09
  6. Step 6: Final answer
    x = 107,601.44

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1.5x scale

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.