Home / 115,161.22-158,849.76-79,288.93

Finding the Fourth Proportional to 115,161.22, 158,849.76 and 79,288.93

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Solution

The fourth proportional to 115,161.22, 158,849.76 and 79,288.93 is: 109,368.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,161.22 : 158,849.76 = 79,288.93 : x
  2. Step 2: Convert to fraction form
    115,161.22/158,849.76 = 79,288.93/x
  3. Step 3: Cross multiply
    115,161.22x = 158,849.76 × 79,288.93
  4. Step 4: Simplify right side
    115,161.22x = 12,595,027,501.16
  5. Step 5: Solve for x
    x = 12,595,027,501.16/115,161.22
  6. Step 6: Final answer
    x = 109,368.65

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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.