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Finding the Fourth Proportional to 115,554.96, 159,311.64 and 91,760.40

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Solution

The fourth proportional to 115,554.96, 159,311.64 and 91,760.40 is: 126,506.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,554.96 : 159,311.64 = 91,760.40 : x
  2. Step 2: Convert to fraction form
    115,554.96/159,311.64 = 91,760.40/x
  3. Step 3: Cross multiply
    115,554.96x = 159,311.64 × 91,760.40
  4. Step 4: Simplify right side
    115,554.96x = 14,618,499,811.06
  5. Step 5: Solve for x
    x = 14,618,499,811.06/115,554.96
  6. Step 6: Final answer
    x = 126,506.90

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.