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Finding the Fourth Proportional to 188,418.29, 260,014.23 and 103,533.53

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Solution

The fourth proportional to 188,418.29, 260,014.23 and 103,533.53 is: 142,874.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,418.29 : 260,014.23 = 103,533.53 : x
  2. Step 2: Convert to fraction form
    188,418.29/260,014.23 = 103,533.53/x
  3. Step 3: Cross multiply
    188,418.29x = 260,014.23 × 103,533.53
  4. Step 4: Simplify right side
    188,418.29x = 26,920,189,782.06
  5. Step 5: Solve for x
    x = 26,920,189,782.06/188,418.29
  6. Step 6: Final answer
    x = 142,874.61

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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.