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Finding the Fourth Proportional to 161,649.72, 223,071.12 and 90,026.04

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Solution

The fourth proportional to 161,649.72, 223,071.12 and 90,026.04 is: 124,232.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,649.72 : 223,071.12 = 90,026.04 : x
  2. Step 2: Convert to fraction form
    161,649.72/223,071.12 = 90,026.04/x
  3. Step 3: Cross multiply
    161,649.72x = 223,071.12 × 90,026.04
  4. Step 4: Simplify right side
    161,649.72x = 20,082,209,571.96
  5. Step 5: Solve for x
    x = 20,082,209,571.96/161,649.72
  6. Step 6: Final answer
    x = 124,232.88

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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.