Home / 123,874.70-171,018.03-81,556.25

Finding the Fourth Proportional to 123,874.70, 171,018.03 and 81,556.25

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Solution

The fourth proportional to 123,874.70, 171,018.03 and 81,556.25 is: 112,594.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,874.70 : 171,018.03 = 81,556.25 : x
  2. Step 2: Convert to fraction form
    123,874.70/171,018.03 = 81,556.25/x
  3. Step 3: Cross multiply
    123,874.70x = 171,018.03 × 81,556.25
  4. Step 4: Simplify right side
    123,874.70x = 13,947,589,209.19
  5. Step 5: Solve for x
    x = 13,947,589,209.19/123,874.70
  6. Step 6: Final answer
    x = 112,594.33

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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.