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Finding the Fourth Proportional to 161,649.21, 223,082.79 and 90,029.22

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Solution

The fourth proportional to 161,649.21, 223,082.79 and 90,029.22 is: 124,244.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,649.21 : 223,082.79 = 90,029.22 : x
  2. Step 2: Convert to fraction form
    161,649.21/223,082.79 = 90,029.22/x
  3. Step 3: Cross multiply
    161,649.21x = 223,082.79 × 90,029.22
  4. Step 4: Simplify right side
    161,649.21x = 20,083,969,579.12
  5. Step 5: Solve for x
    x = 20,083,969,579.12/161,649.21
  6. Step 6: Final answer
    x = 124,244.16

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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.