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Finding the Fourth Proportional to 108,759.98, 163,120.53 and 69,199.58

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Solution

The fourth proportional to 108,759.98, 163,120.53 and 69,199.58 is: 103,787.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,759.98 : 163,120.53 = 69,199.58 : x
  2. Step 2: Convert to fraction form
    108,759.98/163,120.53 = 69,199.58/x
  3. Step 3: Cross multiply
    108,759.98x = 163,120.53 × 69,199.58
  4. Step 4: Simplify right side
    108,759.98x = 11,287,872,165.38
  5. Step 5: Solve for x
    x = 11,287,872,165.38/108,759.98
  6. Step 6: Final answer
    x = 103,787.00

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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.