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Finding the Fourth Proportional to 189,453.76, 261,448.32 and 104,574.40

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Solution

The fourth proportional to 189,453.76, 261,448.32 and 104,574.40 is: 144,313.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,453.76 : 261,448.32 = 104,574.40 : x
  2. Step 2: Convert to fraction form
    189,453.76/261,448.32 = 104,574.40/x
  3. Step 3: Cross multiply
    189,453.76x = 261,448.32 × 104,574.40
  4. Step 4: Simplify right side
    189,453.76x = 27,340,801,195.01
  5. Step 5: Solve for x
    x = 27,340,801,195.01/189,453.76
  6. Step 6: Final answer
    x = 144,313.85

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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.