Home / 219,369.50-329,054.30-79,128.11

Finding the Fourth Proportional to 219,369.50, 329,054.30 and 79,128.11

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Solution

The fourth proportional to 219,369.50, 329,054.30 and 79,128.11 is: 118,692.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,369.50 : 329,054.30 = 79,128.11 : x
  2. Step 2: Convert to fraction form
    219,369.50/329,054.30 = 79,128.11/x
  3. Step 3: Cross multiply
    219,369.50x = 329,054.30 × 79,128.11
  4. Step 4: Simplify right side
    219,369.50x = 26,037,444,450.73
  5. Step 5: Solve for x
    x = 26,037,444,450.73/219,369.50
  6. Step 6: Final answer
    x = 118,692.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.