Home / 109,576.20-164,072.70-69,918.60

Finding the Fourth Proportional to 109,576.20, 164,072.70 and 69,918.60

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Solution

The fourth proportional to 109,576.20, 164,072.70 and 69,918.60 is: 104,691.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,576.20 : 164,072.70 = 69,918.60 : x
  2. Step 2: Convert to fraction form
    109,576.20/164,072.70 = 69,918.60/x
  3. Step 3: Cross multiply
    109,576.20x = 164,072.70 × 69,918.60
  4. Step 4: Simplify right side
    109,576.20x = 11,471,733,482.22
  5. Step 5: Solve for x
    x = 11,471,733,482.22/109,576.20
  6. Step 6: Final answer
    x = 104,691.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.