Home / 117,716.08-162,289.20-79,924.72

Finding the Fourth Proportional to 117,716.08, 162,289.20 and 79,924.72

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Solution

The fourth proportional to 117,716.08, 162,289.20 and 79,924.72 is: 110,188.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,716.08 : 162,289.20 = 79,924.72 : x
  2. Step 2: Convert to fraction form
    117,716.08/162,289.20 = 79,924.72/x
  3. Step 3: Cross multiply
    117,716.08x = 162,289.20 × 79,924.72
  4. Step 4: Simplify right side
    117,716.08x = 12,970,918,869.02
  5. Step 5: Solve for x
    x = 12,970,918,869.02/117,716.08
  6. Step 6: Final answer
    x = 110,188.17

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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.