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Finding the Fourth Proportional to 104,772.16, 144,486.16 and 80,860.96

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Solution

The fourth proportional to 104,772.16, 144,486.16 and 80,860.96 is: 111,511.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,772.16 : 144,486.16 = 80,860.96 : x
  2. Step 2: Convert to fraction form
    104,772.16/144,486.16 = 80,860.96/x
  3. Step 3: Cross multiply
    104,772.16x = 144,486.16 × 80,860.96
  4. Step 4: Simplify right side
    104,772.16x = 11,683,289,604.31
  5. Step 5: Solve for x
    x = 11,683,289,604.31/104,772.16
  6. Step 6: Final answer
    x = 111,511.39

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1.5x scale

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.