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Finding the Fourth Proportional to 108,907.40, 163,361.10 and 64,511.30

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Solution

The fourth proportional to 108,907.40, 163,361.10 and 64,511.30 is: 96,766.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,907.40 : 163,361.10 = 64,511.30 : x
  2. Step 2: Convert to fraction form
    108,907.40/163,361.10 = 64,511.30/x
  3. Step 3: Cross multiply
    108,907.40x = 163,361.10 × 64,511.30
  4. Step 4: Simplify right side
    108,907.40x = 10,538,636,930.43
  5. Step 5: Solve for x
    x = 10,538,636,930.43/108,907.40
  6. Step 6: Final answer
    x = 96,766.95

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1.5x scale

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.