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Finding the Fourth Proportional to 188,509.90, 260,144.52 and 103,632.43

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Solution

The fourth proportional to 188,509.90, 260,144.52 and 103,632.43 is: 143,013.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,509.90 : 260,144.52 = 103,632.43 : x
  2. Step 2: Convert to fraction form
    188,509.90/260,144.52 = 103,632.43/x
  3. Step 3: Cross multiply
    188,509.90x = 260,144.52 × 103,632.43
  4. Step 4: Simplify right side
    188,509.90x = 26,959,408,758.78
  5. Step 5: Solve for x
    x = 26,959,408,758.78/188,509.90
  6. Step 6: Final answer
    x = 143,013.23

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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.