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Finding the Fourth Proportional to 118,107, 162,987.66 and 65,115

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Solution

The fourth proportional to 118,107, 162,987.66 and 65,115 is: 89,858.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,107 : 162,987.66 = 65,115 : x
  2. Step 2: Convert to fraction form
    118,107/162,987.66 = 65,115/x
  3. Step 3: Cross multiply
    118,107x = 162,987.66 × 65,115
  4. Step 4: Simplify right side
    118,107x = 10,612,941,480.90
  5. Step 5: Solve for x
    x = 10,612,941,480.90/118,107
  6. Step 6: Final answer
    x = 89,858.70

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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.