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Finding the Fourth Proportional to 158,832.75, 219,189.20 and 91,764.75

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Solution

The fourth proportional to 158,832.75, 219,189.20 and 91,764.75 is: 126,635.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,832.75 : 219,189.20 = 91,764.75 : x
  2. Step 2: Convert to fraction form
    158,832.75/219,189.20 = 91,764.75/x
  3. Step 3: Cross multiply
    158,832.75x = 219,189.20 × 91,764.75
  4. Step 4: Simplify right side
    158,832.75x = 20,113,841,681.88
  5. Step 5: Solve for x
    x = 20,113,841,681.88/158,832.75
  6. Step 6: Final answer
    x = 126,635.36

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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.