Home / 117,986.36-162,823.88-66,990.98

Finding the Fourth Proportional to 117,986.36, 162,823.88 and 66,990.98

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Solution

The fourth proportional to 117,986.36, 162,823.88 and 66,990.98 is: 92,449.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,986.36 : 162,823.88 = 66,990.98 : x
  2. Step 2: Convert to fraction form
    117,986.36/162,823.88 = 66,990.98/x
  3. Step 3: Cross multiply
    117,986.36x = 162,823.88 × 66,990.98
  4. Step 4: Simplify right side
    117,986.36x = 10,907,731,863.14
  5. Step 5: Solve for x
    x = 10,907,731,863.14/117,986.36
  6. Step 6: Final answer
    x = 92,449.10

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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.