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Finding the Fourth Proportional to 147,642.82, 203,744.25 and 80,575.30

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Solution

The fourth proportional to 147,642.82, 203,744.25 and 80,575.30 is: 111,192.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,642.82 : 203,744.25 = 80,575.30 : x
  2. Step 2: Convert to fraction form
    147,642.82/203,744.25 = 80,575.30/x
  3. Step 3: Cross multiply
    147,642.82x = 203,744.25 × 80,575.30
  4. Step 4: Simplify right side
    147,642.82x = 16,416,754,067.03
  5. Step 5: Solve for x
    x = 16,416,754,067.03/147,642.82
  6. Step 6: Final answer
    x = 111,192.36

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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.