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Finding the Fourth Proportional to 144,467.78, 199,366.80 and 80,811.50

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Solution

The fourth proportional to 144,467.78, 199,366.80 and 80,811.50 is: 111,520.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,467.78 : 199,366.80 = 80,811.50 : x
  2. Step 2: Convert to fraction form
    144,467.78/199,366.80 = 80,811.50/x
  3. Step 3: Cross multiply
    144,467.78x = 199,366.80 × 80,811.50
  4. Step 4: Simplify right side
    144,467.78x = 16,111,130,158.20
  5. Step 5: Solve for x
    x = 16,111,130,158.20/144,467.78
  6. Step 6: Final answer
    x = 111,520.58

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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.