Home / 123,285.23-170,135.90-69,571.40

Finding the Fourth Proportional to 123,285.23, 170,135.90 and 69,571.40

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Solution

The fourth proportional to 123,285.23, 170,135.90 and 69,571.40 is: 96,009.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,285.23 : 170,135.90 = 69,571.40 : x
  2. Step 2: Convert to fraction form
    123,285.23/170,135.90 = 69,571.40/x
  3. Step 3: Cross multiply
    123,285.23x = 170,135.90 × 69,571.40
  4. Step 4: Simplify right side
    123,285.23x = 11,836,591,554.72
  5. Step 5: Solve for x
    x = 11,836,591,554.72/123,285.23
  6. Step 6: Final answer
    x = 96,009.81

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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.