Home / 143,049.82-197,388.59-85,675.70

Finding the Fourth Proportional to 143,049.82, 197,388.59 and 85,675.70

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Solution

The fourth proportional to 143,049.82, 197,388.59 and 85,675.70 is: 118,220.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,049.82 : 197,388.59 = 85,675.70 : x
  2. Step 2: Convert to fraction form
    143,049.82/197,388.59 = 85,675.70/x
  3. Step 3: Cross multiply
    143,049.82x = 197,388.59 × 85,675.70
  4. Step 4: Simplify right side
    143,049.82x = 16,911,405,191.88
  5. Step 5: Solve for x
    x = 16,911,405,191.88/143,049.82
  6. Step 6: Final answer
    x = 118,220.39

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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.