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Finding the Fourth Proportional to 133,134.96, 183,749.99 and 78,684.92

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Solution

The fourth proportional to 133,134.96, 183,749.99 and 78,684.92 is: 108,599.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,134.96 : 183,749.99 = 78,684.92 : x
  2. Step 2: Convert to fraction form
    133,134.96/183,749.99 = 78,684.92/x
  3. Step 3: Cross multiply
    133,134.96x = 183,749.99 × 78,684.92
  4. Step 4: Simplify right side
    133,134.96x = 14,458,351,950.98
  5. Step 5: Solve for x
    x = 14,458,351,950.98/133,134.96
  6. Step 6: Final answer
    x = 108,599.21

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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.