Home / 189,507.11-261,520.17-103,466.09

Finding the Fourth Proportional to 189,507.11, 261,520.17 and 103,466.09

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Solution

The fourth proportional to 189,507.11, 261,520.17 and 103,466.09 is: 142,783.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,507.11 : 261,520.17 = 103,466.09 : x
  2. Step 2: Convert to fraction form
    189,507.11/261,520.17 = 103,466.09/x
  3. Step 3: Cross multiply
    189,507.11x = 261,520.17 × 103,466.09
  4. Step 4: Simplify right side
    189,507.11x = 27,058,468,138.43
  5. Step 5: Solve for x
    x = 27,058,468,138.43/189,507.11
  6. Step 6: Final answer
    x = 142,783.40

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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.