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Finding the Fourth Proportional to 159,173.82, 219,655.28 and 87,553.84

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Solution

The fourth proportional to 159,173.82, 219,655.28 and 87,553.84 is: 120,821.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,173.82 : 219,655.28 = 87,553.84 : x
  2. Step 2: Convert to fraction form
    159,173.82/219,655.28 = 87,553.84/x
  3. Step 3: Cross multiply
    159,173.82x = 219,655.28 × 87,553.84
  4. Step 4: Simplify right side
    159,173.82x = 19,231,663,240.28
  5. Step 5: Solve for x
    x = 19,231,663,240.28/159,173.82
  6. Step 6: Final answer
    x = 120,821.77

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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.