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Finding the Fourth Proportional to 133,261.74, 199,866.60 and 38,485.26

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Solution

The fourth proportional to 133,261.74, 199,866.60 and 38,485.26 is: 57,720.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,261.74 : 199,866.60 = 38,485.26 : x
  2. Step 2: Convert to fraction form
    133,261.74/199,866.60 = 38,485.26/x
  3. Step 3: Cross multiply
    133,261.74x = 199,866.60 × 38,485.26
  4. Step 4: Simplify right side
    133,261.74x = 7,691,918,066.32
  5. Step 5: Solve for x
    x = 7,691,918,066.32/133,261.74
  6. Step 6: Final answer
    x = 57,720.38

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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.