Home / 129,894.96-179,235.83-78,881.16

Finding the Fourth Proportional to 129,894.96, 179,235.83 and 78,881.16

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Solution

The fourth proportional to 129,894.96, 179,235.83 and 78,881.16 is: 108,844.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,894.96 : 179,235.83 = 78,881.16 : x
  2. Step 2: Convert to fraction form
    129,894.96/179,235.83 = 78,881.16/x
  3. Step 3: Cross multiply
    129,894.96x = 179,235.83 × 78,881.16
  4. Step 4: Simplify right side
    129,894.96x = 14,138,329,789.56
  5. Step 5: Solve for x
    x = 14,138,329,789.56/129,894.96
  6. Step 6: Final answer
    x = 108,844.33

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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.