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Finding the Fourth Proportional to 181,220.10, 250,090.11 and 100,649.13

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Solution

The fourth proportional to 181,220.10, 250,090.11 and 100,649.13 is: 138,899.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,220.10 : 250,090.11 = 100,649.13 : x
  2. Step 2: Convert to fraction form
    181,220.10/250,090.11 = 100,649.13/x
  3. Step 3: Cross multiply
    181,220.10x = 250,090.11 × 100,649.13
  4. Step 4: Simplify right side
    181,220.10x = 25,171,351,993.10
  5. Step 5: Solve for x
    x = 25,171,351,993.10/181,220.10
  6. Step 6: Final answer
    x = 138,899.34

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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.