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Finding the Fourth Proportional to 161,991.93, 223,548.21 and 90,371.91

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Solution

The fourth proportional to 161,991.93, 223,548.21 and 90,371.91 is: 124,712.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,991.93 : 223,548.21 = 90,371.91 : x
  2. Step 2: Convert to fraction form
    161,991.93/223,548.21 = 90,371.91/x
  3. Step 3: Cross multiply
    161,991.93x = 223,548.21 × 90,371.91
  4. Step 4: Simplify right side
    161,991.93x = 20,202,478,714.78
  5. Step 5: Solve for x
    x = 20,202,478,714.78/161,991.93
  6. Step 6: Final answer
    x = 124,712.87

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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.