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Finding the Fourth Proportional to 118,643.52, 163,804.46 and 105,874.74

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Solution

The fourth proportional to 118,643.52, 163,804.46 and 105,874.74 is: 146,175.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,643.52 : 163,804.46 = 105,874.74 : x
  2. Step 2: Convert to fraction form
    118,643.52/163,804.46 = 105,874.74/x
  3. Step 3: Cross multiply
    118,643.52x = 163,804.46 × 105,874.74
  4. Step 4: Simplify right side
    118,643.52x = 17,342,753,794.32
  5. Step 5: Solve for x
    x = 17,342,753,794.32/118,643.52
  6. Step 6: Final answer
    x = 146,175.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.