Home / 189,212.19-261,106.23-104,328.64

Finding the Fourth Proportional to 189,212.19, 261,106.23 and 104,328.64

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Solution

The fourth proportional to 189,212.19, 261,106.23 and 104,328.64 is: 143,969.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,212.19 : 261,106.23 = 104,328.64 : x
  2. Step 2: Convert to fraction form
    189,212.19/261,106.23 = 104,328.64/x
  3. Step 3: Cross multiply
    189,212.19x = 261,106.23 × 104,328.64
  4. Step 4: Simplify right side
    189,212.19x = 27,240,857,871.43
  5. Step 5: Solve for x
    x = 27,240,857,871.43/189,212.19
  6. Step 6: Final answer
    x = 143,969.89

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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.