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Finding the Fourth Proportional to 133,311.49, 183,847.93 and 104,243.63

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Solution

The fourth proportional to 133,311.49, 183,847.93 and 104,243.63 is: 143,760.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,311.49 : 183,847.93 = 104,243.63 : x
  2. Step 2: Convert to fraction form
    133,311.49/183,847.93 = 104,243.63/x
  3. Step 3: Cross multiply
    133,311.49x = 183,847.93 × 104,243.63
  4. Step 4: Simplify right side
    133,311.49x = 19,164,974,411.34
  5. Step 5: Solve for x
    x = 19,164,974,411.34/133,311.49
  6. Step 6: Final answer
    x = 143,760.86

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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.