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Finding the Fourth Proportional to 188,969.52, 260,811.93 and 108,423.72

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Solution

The fourth proportional to 188,969.52, 260,811.93 and 108,423.72 is: 149,644.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,969.52 : 260,811.93 = 108,423.72 : x
  2. Step 2: Convert to fraction form
    188,969.52/260,811.93 = 108,423.72/x
  3. Step 3: Cross multiply
    188,969.52x = 260,811.93 × 108,423.72
  4. Step 4: Simplify right side
    188,969.52x = 28,278,199,670.98
  5. Step 5: Solve for x
    x = 28,278,199,670.98/188,969.52
  6. Step 6: Final answer
    x = 149,644.24

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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.