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Finding the Fourth Proportional to 179,640, 247,899.88 and 99,075

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Solution

The fourth proportional to 179,640, 247,899.88 and 99,075 is: 136,721.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,640 : 247,899.88 = 99,075 : x
  2. Step 2: Convert to fraction form
    179,640/247,899.88 = 99,075/x
  3. Step 3: Cross multiply
    179,640x = 247,899.88 × 99,075
  4. Step 4: Simplify right side
    179,640x = 24,560,680,611
  5. Step 5: Solve for x
    x = 24,560,680,611/179,640
  6. Step 6: Final answer
    x = 136,721.67

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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.