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Finding the Fourth Proportional to 192,085.35, 288,128.03 and 145,429.35

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Solution

The fourth proportional to 192,085.35, 288,128.03 and 145,429.35 is: 218,144.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,085.35 : 288,128.03 = 145,429.35 : x
  2. Step 2: Convert to fraction form
    192,085.35/288,128.03 = 145,429.35/x
  3. Step 3: Cross multiply
    192,085.35x = 288,128.03 × 145,429.35
  4. Step 4: Simplify right side
    192,085.35x = 41,902,271,392.53
  5. Step 5: Solve for x
    x = 41,902,271,392.53/192,085.35
  6. Step 6: Final answer
    x = 218,144.03

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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.