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Finding the Fourth Proportional to 108,465.40, 162,843.90 and 69,196.60

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Solution

The fourth proportional to 108,465.40, 162,843.90 and 69,196.60 is: 103,887.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,465.40 : 162,843.90 = 69,196.60 : x
  2. Step 2: Convert to fraction form
    108,465.40/162,843.90 = 69,196.60/x
  3. Step 3: Cross multiply
    108,465.40x = 162,843.90 × 69,196.60
  4. Step 4: Simplify right side
    108,465.40x = 11,268,244,210.74
  5. Step 5: Solve for x
    x = 11,268,244,210.74/108,465.40
  6. Step 6: Final answer
    x = 103,887.91

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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.