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Finding the Fourth Proportional to 188,911.50, 260,697.88 and 104,028.36

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Solution

The fourth proportional to 188,911.50, 260,697.88 and 104,028.36 is: 143,559.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,911.50 : 260,697.88 = 104,028.36 : x
  2. Step 2: Convert to fraction form
    188,911.50/260,697.88 = 104,028.36/x
  3. Step 3: Cross multiply
    188,911.50x = 260,697.88 × 104,028.36
  4. Step 4: Simplify right side
    188,911.50x = 27,119,972,911.88
  5. Step 5: Solve for x
    x = 27,119,972,911.88/188,911.50
  6. Step 6: Final answer
    x = 143,559.14

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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.