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Finding the Fourth Proportional to 202,346.85, 279,218.73 and 111,696.96

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Solution

The fourth proportional to 202,346.85, 279,218.73 and 111,696.96 is: 154,130.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,346.85 : 279,218.73 = 111,696.96 : x
  2. Step 2: Convert to fraction form
    202,346.85/279,218.73 = 111,696.96/x
  3. Step 3: Cross multiply
    202,346.85x = 279,218.73 × 111,696.96
  4. Step 4: Simplify right side
    202,346.85x = 31,187,883,316.06
  5. Step 5: Solve for x
    x = 31,187,883,316.06/202,346.85
  6. Step 6: Final answer
    x = 154,130.81

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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.