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Finding the Fourth Proportional to 133,268.49, 199,779.72 and 66,650.65

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Solution

The fourth proportional to 133,268.49, 199,779.72 and 66,650.65 is: 99,914.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,268.49 : 199,779.72 = 66,650.65 : x
  2. Step 2: Convert to fraction form
    133,268.49/199,779.72 = 66,650.65/x
  3. Step 3: Cross multiply
    133,268.49x = 199,779.72 × 66,650.65
  4. Step 4: Simplify right side
    133,268.49x = 13,315,447,445.43
  5. Step 5: Solve for x
    x = 13,315,447,445.43/133,268.49
  6. Step 6: Final answer
    x = 99,914.45

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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.