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Finding the Fourth Proportional to 115,473.27, 159,264.86 and 79,723.11

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Solution

The fourth proportional to 115,473.27, 159,264.86 and 79,723.11 is: 109,956.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,473.27 : 159,264.86 = 79,723.11 : x
  2. Step 2: Convert to fraction form
    115,473.27/159,264.86 = 79,723.11/x
  3. Step 3: Cross multiply
    115,473.27x = 159,264.86 × 79,723.11
  4. Step 4: Simplify right side
    115,473.27x = 12,697,089,554.30
  5. Step 5: Solve for x
    x = 12,697,089,554.30/115,473.27
  6. Step 6: Final answer
    x = 109,956.96

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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.