Home / 260,083.51-390,138.75-82,604.41

Finding the Fourth Proportional to 260,083.51, 390,138.75 and 82,604.41

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Solution

The fourth proportional to 260,083.51, 390,138.75 and 82,604.41 is: 123,910.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,083.51 : 390,138.75 = 82,604.41 : x
  2. Step 2: Convert to fraction form
    260,083.51/390,138.75 = 82,604.41/x
  3. Step 3: Cross multiply
    260,083.51x = 390,138.75 × 82,604.41
  4. Step 4: Simplify right side
    260,083.51x = 32,227,181,261.89
  5. Step 5: Solve for x
    x = 32,227,181,261.89/260,083.51
  6. Step 6: Final answer
    x = 123,910.90

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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.