Home / 115,169.10-158,860.60-79,296.81

Finding the Fourth Proportional to 115,169.10, 158,860.60 and 79,296.81

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Solution

The fourth proportional to 115,169.10, 158,860.60 and 79,296.81 is: 109,379.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,169.10 : 158,860.60 = 79,296.81 : x
  2. Step 2: Convert to fraction form
    115,169.10/158,860.60 = 79,296.81/x
  3. Step 3: Cross multiply
    115,169.10x = 158,860.60 × 79,296.81
  4. Step 4: Simplify right side
    115,169.10x = 12,597,138,814.69
  5. Step 5: Solve for x
    x = 12,597,138,814.69/115,169.10
  6. Step 6: Final answer
    x = 109,379.50

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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.