Home / 100,956.64-139,321.09-55,636.24

Finding the Fourth Proportional to 100,956.64, 139,321.09 and 55,636.24

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Solution

The fourth proportional to 100,956.64, 139,321.09 and 55,636.24 is: 76,778.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,956.64 : 139,321.09 = 55,636.24 : x
  2. Step 2: Convert to fraction form
    100,956.64/139,321.09 = 55,636.24/x
  3. Step 3: Cross multiply
    100,956.64x = 139,321.09 × 55,636.24
  4. Step 4: Simplify right side
    100,956.64x = 7,751,301,600.30
  5. Step 5: Solve for x
    x = 7,751,301,600.30/100,956.64
  6. Step 6: Final answer
    x = 76,778.52

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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.