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Finding the Fourth Proportional to 146,143.56, 201,678 and 79,075.56

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Solution

The fourth proportional to 146,143.56, 201,678 and 79,075.56 is: 109,124.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,143.56 : 201,678 = 79,075.56 : x
  2. Step 2: Convert to fraction form
    146,143.56/201,678 = 79,075.56/x
  3. Step 3: Cross multiply
    146,143.56x = 201,678 × 79,075.56
  4. Step 4: Simplify right side
    146,143.56x = 15,947,800,789.68
  5. Step 5: Solve for x
    x = 15,947,800,789.68/146,143.56
  6. Step 6: Final answer
    x = 109,124.21

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1.5x scale

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.