Home / 100,240.44-138,325.86-54,909.36

Finding the Fourth Proportional to 100,240.44, 138,325.86 and 54,909.36

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Solution

The fourth proportional to 100,240.44, 138,325.86 and 54,909.36 is: 75,771.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,240.44 : 138,325.86 = 54,909.36 : x
  2. Step 2: Convert to fraction form
    100,240.44/138,325.86 = 54,909.36/x
  3. Step 3: Cross multiply
    100,240.44x = 138,325.86 × 54,909.36
  4. Step 4: Simplify right side
    100,240.44x = 7,595,384,444.05
  5. Step 5: Solve for x
    x = 7,595,384,444.05/100,240.44
  6. Step 6: Final answer
    x = 75,771.66

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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.