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Finding the Fourth Proportional to 100,277.20, 150,415.80 and 84,530.80

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Solution

The fourth proportional to 100,277.20, 150,415.80 and 84,530.80 is: 126,796.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,277.20 : 150,415.80 = 84,530.80 : x
  2. Step 2: Convert to fraction form
    100,277.20/150,415.80 = 84,530.80/x
  3. Step 3: Cross multiply
    100,277.20x = 150,415.80 × 84,530.80
  4. Step 4: Simplify right side
    100,277.20x = 12,714,767,906.64
  5. Step 5: Solve for x
    x = 12,714,767,906.64/100,277.20
  6. Step 6: Final answer
    x = 126,796.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.