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Finding the Fourth Proportional to 109,230.80, 163,855.04 and 30,345.03

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Solution

The fourth proportional to 109,230.80, 163,855.04 and 30,345.03 is: 45,520.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,230.80 : 163,855.04 = 30,345.03 : x
  2. Step 2: Convert to fraction form
    109,230.80/163,855.04 = 30,345.03/x
  3. Step 3: Cross multiply
    109,230.80x = 163,855.04 × 30,345.03
  4. Step 4: Simplify right side
    109,230.80x = 4,972,185,952.73
  5. Step 5: Solve for x
    x = 4,972,185,952.73/109,230.80
  6. Step 6: Final answer
    x = 45,520.00

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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.