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Finding the Fourth Proportional to 159,053.82, 219,497 and 87,436.86

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Solution

The fourth proportional to 159,053.82, 219,497 and 87,436.86 is: 120,664.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,053.82 : 219,497 = 87,436.86 : x
  2. Step 2: Convert to fraction form
    159,053.82/219,497 = 87,436.86/x
  3. Step 3: Cross multiply
    159,053.82x = 219,497 × 87,436.86
  4. Step 4: Simplify right side
    159,053.82x = 19,192,128,459.42
  5. Step 5: Solve for x
    x = 19,192,128,459.42/159,053.82
  6. Step 6: Final answer
    x = 120,664.37

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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.