Home / 102,799.30-154,128.75-54,775.12

Finding the Fourth Proportional to 102,799.30, 154,128.75 and 54,775.12

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Solution

The fourth proportional to 102,799.30, 154,128.75 and 54,775.12 is: 82,125.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,799.30 : 154,128.75 = 54,775.12 : x
  2. Step 2: Convert to fraction form
    102,799.30/154,128.75 = 54,775.12/x
  3. Step 3: Cross multiply
    102,799.30x = 154,128.75 × 54,775.12
  4. Step 4: Simplify right side
    102,799.30x = 8,442,420,776.70
  5. Step 5: Solve for x
    x = 8,442,420,776.70/102,799.30
  6. Step 6: Final answer
    x = 82,125.27

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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.