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Finding the Fourth Proportional to 123,293.54, 170,135.37 and 75,540.40

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Solution

The fourth proportional to 123,293.54, 170,135.37 and 75,540.40 is: 104,239.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,293.54 : 170,135.37 = 75,540.40 : x
  2. Step 2: Convert to fraction form
    123,293.54/170,135.37 = 75,540.40/x
  3. Step 3: Cross multiply
    123,293.54x = 170,135.37 × 75,540.40
  4. Step 4: Simplify right side
    123,293.54x = 12,852,093,053.27
  5. Step 5: Solve for x
    x = 12,852,093,053.27/123,293.54
  6. Step 6: Final answer
    x = 104,239.79

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1.5x scale

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.