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Finding the Fourth Proportional to 118,473.72, 163,475.46 and 68,163

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Solution

The fourth proportional to 118,473.72, 163,475.46 and 68,163 is: 94,054.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,473.72 : 163,475.46 = 68,163 : x
  2. Step 2: Convert to fraction form
    118,473.72/163,475.46 = 68,163/x
  3. Step 3: Cross multiply
    118,473.72x = 163,475.46 × 68,163
  4. Step 4: Simplify right side
    118,473.72x = 11,142,977,779.98
  5. Step 5: Solve for x
    x = 11,142,977,779.98/118,473.72
  6. Step 6: Final answer
    x = 94,054.43

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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.