Home / 100,245.36-138,336.48-54,921.14

Finding the Fourth Proportional to 100,245.36, 138,336.48 and 54,921.14

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Solution

The fourth proportional to 100,245.36, 138,336.48 and 54,921.14 is: 75,790.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,245.36 : 138,336.48 = 54,921.14 : x
  2. Step 2: Convert to fraction form
    100,245.36/138,336.48 = 54,921.14/x
  3. Step 3: Cross multiply
    100,245.36x = 138,336.48 × 54,921.14
  4. Step 4: Simplify right side
    100,245.36x = 7,597,596,493.50
  5. Step 5: Solve for x
    x = 7,597,596,493.50/100,245.36
  6. Step 6: Final answer
    x = 75,790.01

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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.