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Finding the Fourth Proportional to 159,840.33, 220,579.21 and 88,219.86

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Solution

The fourth proportional to 159,840.33, 220,579.21 and 88,219.86 is: 121,743.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,840.33 : 220,579.21 = 88,219.86 : x
  2. Step 2: Convert to fraction form
    159,840.33/220,579.21 = 88,219.86/x
  3. Step 3: Cross multiply
    159,840.33x = 220,579.21 × 88,219.86
  4. Step 4: Simplify right side
    159,840.33x = 19,459,467,025.11
  5. Step 5: Solve for x
    x = 19,459,467,025.11/159,840.33
  6. Step 6: Final answer
    x = 121,743.16

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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.