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Finding the Fourth Proportional to 159,131.98, 219,607.77 and 87,517.54

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Solution

The fourth proportional to 159,131.98, 219,607.77 and 87,517.54 is: 120,777.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,131.98 : 219,607.77 = 87,517.54 : x
  2. Step 2: Convert to fraction form
    159,131.98/219,607.77 = 87,517.54/x
  3. Step 3: Cross multiply
    159,131.98x = 219,607.77 × 87,517.54
  4. Step 4: Simplify right side
    159,131.98x = 19,219,531,795.29
  5. Step 5: Solve for x
    x = 19,219,531,795.29/159,131.98
  6. Step 6: Final answer
    x = 120,777.31

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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.