Home / 133,186.86-199,710.09-91,078.89

Finding the Fourth Proportional to 133,186.86, 199,710.09 and 91,078.89

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Solution

The fourth proportional to 133,186.86, 199,710.09 and 91,078.89 is: 136,570.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,186.86 : 199,710.09 = 91,078.89 : x
  2. Step 2: Convert to fraction form
    133,186.86/199,710.09 = 91,078.89/x
  3. Step 3: Cross multiply
    133,186.86x = 199,710.09 × 91,078.89
  4. Step 4: Simplify right side
    133,186.86x = 18,189,373,319.00
  5. Step 5: Solve for x
    x = 18,189,373,319.00/133,186.86
  6. Step 6: Final answer
    x = 136,570.33

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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.