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Finding the Fourth Proportional to 188,424.30, 260,022.51 and 103,539.54

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Solution

The fourth proportional to 188,424.30, 260,022.51 and 103,539.54 is: 142,882.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,424.30 : 260,022.51 = 103,539.54 : x
  2. Step 2: Convert to fraction form
    188,424.30/260,022.51 = 103,539.54/x
  3. Step 3: Cross multiply
    188,424.30x = 260,022.51 × 103,539.54
  4. Step 4: Simplify right side
    188,424.30x = 26,922,611,075.05
  5. Step 5: Solve for x
    x = 26,922,611,075.05/188,424.30
  6. Step 6: Final answer
    x = 142,882.90

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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.