Home / 165,738.46-228,720.59-100,328.80

Finding the Fourth Proportional to 165,738.46, 228,720.59 and 100,328.80

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Solution

The fourth proportional to 165,738.46, 228,720.59 and 100,328.80 is: 138,454.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,738.46 : 228,720.59 = 100,328.80 : x
  2. Step 2: Convert to fraction form
    165,738.46/228,720.59 = 100,328.80/x
  3. Step 3: Cross multiply
    165,738.46x = 228,720.59 × 100,328.80
  4. Step 4: Simplify right side
    165,738.46x = 22,947,262,329.99
  5. Step 5: Solve for x
    x = 22,947,262,329.99/165,738.46
  6. Step 6: Final answer
    x = 138,454.66

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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.