Home / 117,821.83-162,405.08-79,569.15

Finding the Fourth Proportional to 117,821.83, 162,405.08 and 79,569.15

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Solution

The fourth proportional to 117,821.83, 162,405.08 and 79,569.15 is: 109,677.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,821.83 : 162,405.08 = 79,569.15 : x
  2. Step 2: Convert to fraction form
    117,821.83/162,405.08 = 79,569.15/x
  3. Step 3: Cross multiply
    117,821.83x = 162,405.08 × 79,569.15
  4. Step 4: Simplify right side
    117,821.83x = 12,922,434,998.64
  5. Step 5: Solve for x
    x = 12,922,434,998.64/117,821.83
  6. Step 6: Final answer
    x = 109,677.76

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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.