Home / 142,578.23-196,801.79-82,189.26

Finding the Fourth Proportional to 142,578.23, 196,801.79 and 82,189.26

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Solution

The fourth proportional to 142,578.23, 196,801.79 and 82,189.26 is: 113,446.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,578.23 : 196,801.79 = 82,189.26 : x
  2. Step 2: Convert to fraction form
    142,578.23/196,801.79 = 82,189.26/x
  3. Step 3: Cross multiply
    142,578.23x = 196,801.79 × 82,189.26
  4. Step 4: Simplify right side
    142,578.23x = 16,174,993,075.83
  5. Step 5: Solve for x
    x = 16,174,993,075.83/142,578.23
  6. Step 6: Final answer
    x = 113,446.45

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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.