Home / 100,166.05-138,224.87-54,843.21

Finding the Fourth Proportional to 100,166.05, 138,224.87 and 54,843.21

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Solution

The fourth proportional to 100,166.05, 138,224.87 and 54,843.21 is: 75,681.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,166.05 : 138,224.87 = 54,843.21 : x
  2. Step 2: Convert to fraction form
    100,166.05/138,224.87 = 54,843.21/x
  3. Step 3: Cross multiply
    100,166.05x = 138,224.87 × 54,843.21
  4. Step 4: Simplify right side
    100,166.05x = 7,580,695,572.63
  5. Step 5: Solve for x
    x = 7,580,695,572.63/100,166.05
  6. Step 6: Final answer
    x = 75,681.29

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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.