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Finding the Fourth Proportional to 199,589.12, 299,512.16 and 79,625.58

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Solution

The fourth proportional to 199,589.12, 299,512.16 and 79,625.58 is: 119,489.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,589.12 : 299,512.16 = 79,625.58 : x
  2. Step 2: Convert to fraction form
    199,589.12/299,512.16 = 79,625.58/x
  3. Step 3: Cross multiply
    199,589.12x = 299,512.16 × 79,625.58
  4. Step 4: Simplify right side
    199,589.12x = 23,848,829,058.92
  5. Step 5: Solve for x
    x = 23,848,829,058.92/199,589.12
  6. Step 6: Final answer
    x = 119,489.63

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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.