Home / 123,408.49-170,294.37-69,686.05

Finding the Fourth Proportional to 123,408.49, 170,294.37 and 69,686.05

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Solution

The fourth proportional to 123,408.49, 170,294.37 and 69,686.05 is: 96,161.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,408.49 : 170,294.37 = 69,686.05 : x
  2. Step 2: Convert to fraction form
    123,408.49/170,294.37 = 69,686.05/x
  3. Step 3: Cross multiply
    123,408.49x = 170,294.37 × 69,686.05
  4. Step 4: Simplify right side
    123,408.49x = 11,867,141,982.54
  5. Step 5: Solve for x
    x = 11,867,141,982.54/123,408.49
  6. Step 6: Final answer
    x = 96,161.47

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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.