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Finding the Fourth Proportional to 159,101.25, 219,554.11 and 87,480.77

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Solution

The fourth proportional to 159,101.25, 219,554.11 and 87,480.77 is: 120,720.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,101.25 : 219,554.11 = 87,480.77 : x
  2. Step 2: Convert to fraction form
    159,101.25/219,554.11 = 87,480.77/x
  3. Step 3: Cross multiply
    159,101.25x = 219,554.11 × 87,480.77
  4. Step 4: Simplify right side
    159,101.25x = 19,206,762,162.06
  5. Step 5: Solve for x
    x = 19,206,762,162.06/159,101.25
  6. Step 6: Final answer
    x = 120,720.37

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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.