Home / 189,219.20-261,123.04-104,334.40

Finding the Fourth Proportional to 189,219.20, 261,123.04 and 104,334.40

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Solution

The fourth proportional to 189,219.20, 261,123.04 and 104,334.40 is: 143,981.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,219.20 : 261,123.04 = 104,334.40 : x
  2. Step 2: Convert to fraction form
    189,219.20/261,123.04 = 104,334.40/x
  3. Step 3: Cross multiply
    189,219.20x = 261,123.04 × 104,334.40
  4. Step 4: Simplify right side
    189,219.20x = 27,244,115,704.58
  5. Step 5: Solve for x
    x = 27,244,115,704.58/189,219.20
  6. Step 6: Final answer
    x = 143,981.77

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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.