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Finding the Fourth Proportional to 192,012.80, 287,630.40 and 108,809.60

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Solution

The fourth proportional to 192,012.80, 287,630.40 and 108,809.60 is: 162,994.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,012.80 : 287,630.40 = 108,809.60 : x
  2. Step 2: Convert to fraction form
    192,012.80/287,630.40 = 108,809.60/x
  3. Step 3: Cross multiply
    192,012.80x = 287,630.40 × 108,809.60
  4. Step 4: Simplify right side
    192,012.80x = 31,296,948,771.84
  5. Step 5: Solve for x
    x = 31,296,948,771.84/192,012.80
  6. Step 6: Final answer
    x = 162,994.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.