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Finding the Fourth Proportional to 133,811.99, 184,564.13 and 86,019.66

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Solution

The fourth proportional to 133,811.99, 184,564.13 and 86,019.66 is: 118,645.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,811.99 : 184,564.13 = 86,019.66 : x
  2. Step 2: Convert to fraction form
    133,811.99/184,564.13 = 86,019.66/x
  3. Step 3: Cross multiply
    133,811.99x = 184,564.13 × 86,019.66
  4. Step 4: Simplify right side
    133,811.99x = 15,876,143,710.80
  5. Step 5: Solve for x
    x = 15,876,143,710.80/133,811.99
  6. Step 6: Final answer
    x = 118,645.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.