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Finding the Fourth Proportional to 159,167.42, 219,654.55 and 87,551.07

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Solution

The fourth proportional to 159,167.42, 219,654.55 and 87,551.07 is: 120,822.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,167.42 : 219,654.55 = 87,551.07 : x
  2. Step 2: Convert to fraction form
    159,167.42/219,654.55 = 87,551.07/x
  3. Step 3: Cross multiply
    159,167.42x = 219,654.55 × 87,551.07
  4. Step 4: Simplify right side
    159,167.42x = 19,230,990,882.87
  5. Step 5: Solve for x
    x = 19,230,990,882.87/159,167.42
  6. Step 6: Final answer
    x = 120,822.41

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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.