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Finding the Fourth Proportional to 189,908.61, 284,775.09 and 69,935.27

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Solution

The fourth proportional to 189,908.61, 284,775.09 and 69,935.27 is: 104,870.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,908.61 : 284,775.09 = 69,935.27 : x
  2. Step 2: Convert to fraction form
    189,908.61/284,775.09 = 69,935.27/x
  3. Step 3: Cross multiply
    189,908.61x = 284,775.09 × 69,935.27
  4. Step 4: Simplify right side
    189,908.61x = 19,915,822,808.42
  5. Step 5: Solve for x
    x = 19,915,822,808.42/189,908.61
  6. Step 6: Final answer
    x = 104,870.56

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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.