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Finding the Fourth Proportional to 158,319.95, 218,481.84 and 85,723.59

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Solution

The fourth proportional to 158,319.95, 218,481.84 and 85,723.59 is: 118,298.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,319.95 : 218,481.84 = 85,723.59 : x
  2. Step 2: Convert to fraction form
    158,319.95/218,481.84 = 85,723.59/x
  3. Step 3: Cross multiply
    158,319.95x = 218,481.84 × 85,723.59
  4. Step 4: Simplify right side
    158,319.95x = 18,729,048,493.91
  5. Step 5: Solve for x
    x = 18,729,048,493.91/158,319.95
  6. Step 6: Final answer
    x = 118,298.73

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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.