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Finding the Fourth Proportional to 111,666.50, 154,099.77 and 61,365.50

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Solution

The fourth proportional to 111,666.50, 154,099.77 and 61,365.50 is: 84,684.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,666.50 : 154,099.77 = 61,365.50 : x
  2. Step 2: Convert to fraction form
    111,666.50/154,099.77 = 61,365.50/x
  3. Step 3: Cross multiply
    111,666.50x = 154,099.77 × 61,365.50
  4. Step 4: Simplify right side
    111,666.50x = 9,456,409,435.94
  5. Step 5: Solve for x
    x = 9,456,409,435.94/111,666.50
  6. Step 6: Final answer
    x = 84,684.39

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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.