Home / 100,415.25-138,568.46-55,092.30

Finding the Fourth Proportional to 100,415.25, 138,568.46 and 55,092.30

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Solution

The fourth proportional to 100,415.25, 138,568.46 and 55,092.30 is: 76,024.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,415.25 : 138,568.46 = 55,092.30 : x
  2. Step 2: Convert to fraction form
    100,415.25/138,568.46 = 55,092.30/x
  3. Step 3: Cross multiply
    100,415.25x = 138,568.46 × 55,092.30
  4. Step 4: Simplify right side
    100,415.25x = 7,634,054,893.40
  5. Step 5: Solve for x
    x = 7,634,054,893.40/100,415.25
  6. Step 6: Final answer
    x = 76,024.86

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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.