Home / 189,223.20-261,128.56-104,338.40

Finding the Fourth Proportional to 189,223.20, 261,128.56 and 104,338.40

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Solution

The fourth proportional to 189,223.20, 261,128.56 and 104,338.40 is: 143,987.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,223.20 : 261,128.56 = 104,338.40 : x
  2. Step 2: Convert to fraction form
    189,223.20/261,128.56 = 104,338.40/x
  3. Step 3: Cross multiply
    189,223.20x = 261,128.56 × 104,338.40
  4. Step 4: Simplify right side
    189,223.20x = 27,245,736,144.70
  5. Step 5: Solve for x
    x = 27,245,736,144.70/189,223.20
  6. Step 6: Final answer
    x = 143,987.29

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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.