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Finding the Fourth Proportional to 189,373.36, 284,039.05 and 67,789.08

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Solution

The fourth proportional to 189,373.36, 284,039.05 and 67,789.08 is: 101,676.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,373.36 : 284,039.05 = 67,789.08 : x
  2. Step 2: Convert to fraction form
    189,373.36/284,039.05 = 67,789.08/x
  3. Step 3: Cross multiply
    189,373.36x = 284,039.05 × 67,789.08
  4. Step 4: Simplify right side
    189,373.36x = 19,254,745,883.57
  5. Step 5: Solve for x
    x = 19,254,745,883.57/189,373.36
  6. Step 6: Final answer
    x = 101,676.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.