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Finding the Fourth Proportional to 159,278.08, 219,795.44 and 87,644.24

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Solution

The fourth proportional to 159,278.08, 219,795.44 and 87,644.24 is: 120,944.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,278.08 : 219,795.44 = 87,644.24 : x
  2. Step 2: Convert to fraction form
    159,278.08/219,795.44 = 87,644.24/x
  3. Step 3: Cross multiply
    159,278.08x = 219,795.44 × 87,644.24
  4. Step 4: Simplify right side
    159,278.08x = 19,263,804,294.27
  5. Step 5: Solve for x
    x = 19,263,804,294.27/159,278.08
  6. Step 6: Final answer
    x = 120,944.48

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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.