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Finding the Fourth Proportional to 163,855.81, 245,879.21 and 69,080.17

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Solution

The fourth proportional to 163,855.81, 245,879.21 and 69,080.17 is: 103,660.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,855.81 : 245,879.21 = 69,080.17 : x
  2. Step 2: Convert to fraction form
    163,855.81/245,879.21 = 69,080.17/x
  3. Step 3: Cross multiply
    163,855.81x = 245,879.21 × 69,080.17
  4. Step 4: Simplify right side
    163,855.81x = 16,985,377,626.27
  5. Step 5: Solve for x
    x = 16,985,377,626.27/163,855.81
  6. Step 6: Final answer
    x = 103,660.51

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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.