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Finding the Fourth Proportional to 115,168.34, 158,871.57 and 79,296.08

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Solution

The fourth proportional to 115,168.34, 158,871.57 and 79,296.08 is: 109,386.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,168.34 : 158,871.57 = 79,296.08 : x
  2. Step 2: Convert to fraction form
    115,168.34/158,871.57 = 79,296.08/x
  3. Step 3: Cross multiply
    115,168.34x = 158,871.57 × 79,296.08
  4. Step 4: Simplify right side
    115,168.34x = 12,597,891,930.09
  5. Step 5: Solve for x
    x = 12,597,891,930.09/115,168.34
  6. Step 6: Final answer
    x = 109,386.77

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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.