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Finding the Fourth Proportional to 163,872, 245,579.40 and 123,858.12

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Solution

The fourth proportional to 163,872, 245,579.40 and 123,858.12 is: 185,614.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,872 : 245,579.40 = 123,858.12 : x
  2. Step 2: Convert to fraction form
    163,872/245,579.40 = 123,858.12/x
  3. Step 3: Cross multiply
    163,872x = 245,579.40 × 123,858.12
  4. Step 4: Simplify right side
    163,872x = 30,417,002,794.73
  5. Step 5: Solve for x
    x = 30,417,002,794.73/163,872
  6. Step 6: Final answer
    x = 185,614.40

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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.