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Finding the Fourth Proportional to 159,267.93, 219,789.78 and 87,647.96

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Solution

The fourth proportional to 159,267.93, 219,789.78 and 87,647.96 is: 120,954.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,267.93 : 219,789.78 = 87,647.96 : x
  2. Step 2: Convert to fraction form
    159,267.93/219,789.78 = 87,647.96/x
  3. Step 3: Cross multiply
    159,267.93x = 219,789.78 × 87,647.96
  4. Step 4: Simplify right side
    159,267.93x = 19,264,124,418.22
  5. Step 5: Solve for x
    x = 19,264,124,418.22/159,267.93
  6. Step 6: Final answer
    x = 120,954.20

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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.