Home / 117,891.37-162,690.10-64,176.78

Finding the Fourth Proportional to 117,891.37, 162,690.10 and 64,176.78

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Solution

The fourth proportional to 117,891.37, 162,690.10 and 64,176.78 is: 88,563.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,891.37 : 162,690.10 = 64,176.78 : x
  2. Step 2: Convert to fraction form
    117,891.37/162,690.10 = 64,176.78/x
  3. Step 3: Cross multiply
    117,891.37x = 162,690.10 × 64,176.78
  4. Step 4: Simplify right side
    117,891.37x = 10,440,926,755.88
  5. Step 5: Solve for x
    x = 10,440,926,755.88/117,891.37
  6. Step 6: Final answer
    x = 88,563.96

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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.