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Finding the Fourth Proportional to 108,914.40, 163,371.60 and 108,136.80

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Solution

The fourth proportional to 108,914.40, 163,371.60 and 108,136.80 is: 162,205.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,914.40 : 163,371.60 = 108,136.80 : x
  2. Step 2: Convert to fraction form
    108,914.40/163,371.60 = 108,136.80/x
  3. Step 3: Cross multiply
    108,914.40x = 163,371.60 × 108,136.80
  4. Step 4: Simplify right side
    108,914.40x = 17,666,482,034.88
  5. Step 5: Solve for x
    x = 17,666,482,034.88/108,914.40
  6. Step 6: Final answer
    x = 162,205.20

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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.