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Finding the Fourth Proportional to 171,596.56, 257,110.32 and 121,427.98

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Solution

The fourth proportional to 171,596.56, 257,110.32 and 121,427.98 is: 181,940.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,596.56 : 257,110.32 = 121,427.98 : x
  2. Step 2: Convert to fraction form
    171,596.56/257,110.32 = 121,427.98/x
  3. Step 3: Cross multiply
    171,596.56x = 257,110.32 × 121,427.98
  4. Step 4: Simplify right side
    171,596.56x = 31,220,386,794.75
  5. Step 5: Solve for x
    x = 31,220,386,794.75/171,596.56
  6. Step 6: Final answer
    x = 181,940.63

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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.