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Finding the Fourth Proportional to 159,773.13, 220,506.45 and 91,789.98

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Solution

The fourth proportional to 159,773.13, 220,506.45 and 91,789.98 is: 126,681.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,773.13 : 220,506.45 = 91,789.98 : x
  2. Step 2: Convert to fraction form
    159,773.13/220,506.45 = 91,789.98/x
  3. Step 3: Cross multiply
    159,773.13x = 220,506.45 × 91,789.98
  4. Step 4: Simplify right side
    159,773.13x = 20,240,282,635.37
  5. Step 5: Solve for x
    x = 20,240,282,635.37/159,773.13
  6. Step 6: Final answer
    x = 126,681.39

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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.