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Finding the Fourth Proportional to 133,379.70, 199,577.48 and 121,569.90

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Solution

The fourth proportional to 133,379.70, 199,577.48 and 121,569.90 is: 181,906.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,379.70 : 199,577.48 = 121,569.90 : x
  2. Step 2: Convert to fraction form
    133,379.70/199,577.48 = 121,569.90/x
  3. Step 3: Cross multiply
    133,379.70x = 199,577.48 × 121,569.90
  4. Step 4: Simplify right side
    133,379.70x = 24,262,613,678.00
  5. Step 5: Solve for x
    x = 24,262,613,678.00/133,379.70
  6. Step 6: Final answer
    x = 181,906.34

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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.