Home / 100,556.35-138,767.51-55,234.22

Finding the Fourth Proportional to 100,556.35, 138,767.51 and 55,234.22

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Solution

The fourth proportional to 100,556.35, 138,767.51 and 55,234.22 is: 76,223.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,556.35 : 138,767.51 = 55,234.22 : x
  2. Step 2: Convert to fraction form
    100,556.35/138,767.51 = 55,234.22/x
  3. Step 3: Cross multiply
    100,556.35x = 138,767.51 × 55,234.22
  4. Step 4: Simplify right side
    100,556.35x = 7,664,714,206.18
  5. Step 5: Solve for x
    x = 7,664,714,206.18/100,556.35
  6. Step 6: Final answer
    x = 76,223.08

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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.