Home / 131,591.26-181,431.36-109,818.88

Finding the Fourth Proportional to 131,591.26, 181,431.36 and 109,818.88

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Solution

The fourth proportional to 131,591.26, 181,431.36 and 109,818.88 is: 151,412.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,591.26 : 181,431.36 = 109,818.88 : x
  2. Step 2: Convert to fraction form
    131,591.26/181,431.36 = 109,818.88/x
  3. Step 3: Cross multiply
    131,591.26x = 181,431.36 × 109,818.88
  4. Step 4: Simplify right side
    131,591.26x = 19,924,588,752.08
  5. Step 5: Solve for x
    x = 19,924,588,752.08/131,591.26
  6. Step 6: Final answer
    x = 151,412.71

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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.