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Finding the Fourth Proportional to 133,283.70, 183,936.42 and 72,858.38

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Solution

The fourth proportional to 133,283.70, 183,936.42 and 72,858.38 is: 100,547.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,283.70 : 183,936.42 = 72,858.38 : x
  2. Step 2: Convert to fraction form
    133,283.70/183,936.42 = 72,858.38/x
  3. Step 3: Cross multiply
    133,283.70x = 183,936.42 × 72,858.38
  4. Step 4: Simplify right side
    133,283.70x = 13,401,308,664.52
  5. Step 5: Solve for x
    x = 13,401,308,664.52/133,283.70
  6. Step 6: Final answer
    x = 100,547.24

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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.