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Finding the Fourth Proportional to 181,403.80, 272,105.70 and 131,378.20

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Solution

The fourth proportional to 181,403.80, 272,105.70 and 131,378.20 is: 197,067.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,403.80 : 272,105.70 = 131,378.20 : x
  2. Step 2: Convert to fraction form
    181,403.80/272,105.70 = 131,378.20/x
  3. Step 3: Cross multiply
    181,403.80x = 272,105.70 × 131,378.20
  4. Step 4: Simplify right side
    181,403.80x = 35,748,757,075.74
  5. Step 5: Solve for x
    x = 35,748,757,075.74/181,403.80
  6. Step 6: Final answer
    x = 197,067.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.