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Finding the Fourth Proportional to 147,919.80, 221,912.10 and 73,075.80

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Solution

The fourth proportional to 147,919.80, 221,912.10 and 73,075.80 is: 109,629.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,919.80 : 221,912.10 = 73,075.80 : x
  2. Step 2: Convert to fraction form
    147,919.80/221,912.10 = 73,075.80/x
  3. Step 3: Cross multiply
    147,919.80x = 221,912.10 × 73,075.80
  4. Step 4: Simplify right side
    147,919.80x = 16,216,404,237.18
  5. Step 5: Solve for x
    x = 16,216,404,237.18/147,919.80
  6. Step 6: Final answer
    x = 109,629.71

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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.