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Finding the Fourth Proportional to 159,892.41, 220,658.67 and 91,931.43

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Solution

The fourth proportional to 159,892.41, 220,658.67 and 91,931.43 is: 126,869.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,892.41 : 220,658.67 = 91,931.43 : x
  2. Step 2: Convert to fraction form
    159,892.41/220,658.67 = 91,931.43/x
  3. Step 3: Cross multiply
    159,892.41x = 220,658.67 × 91,931.43
  4. Step 4: Simplify right side
    159,892.41x = 20,285,467,075.00
  5. Step 5: Solve for x
    x = 20,285,467,075.00/159,892.41
  6. Step 6: Final answer
    x = 126,869.48

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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.