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Finding the Fourth Proportional to 118,005.72, 162,829.62 and 67,695

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Solution

The fourth proportional to 118,005.72, 162,829.62 and 67,695 is: 93,408.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,005.72 : 162,829.62 = 67,695 : x
  2. Step 2: Convert to fraction form
    118,005.72/162,829.62 = 67,695/x
  3. Step 3: Cross multiply
    118,005.72x = 162,829.62 × 67,695
  4. Step 4: Simplify right side
    118,005.72x = 11,022,751,125.90
  5. Step 5: Solve for x
    x = 11,022,751,125.90/118,005.72
  6. Step 6: Final answer
    x = 93,408.62

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