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Finding the Fourth Proportional to 192,090.60, 288,135.90 and 122,279.40

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Solution

The fourth proportional to 192,090.60, 288,135.90 and 122,279.40 is: 183,419.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,090.60 : 288,135.90 = 122,279.40 : x
  2. Step 2: Convert to fraction form
    192,090.60/288,135.90 = 122,279.40/x
  3. Step 3: Cross multiply
    192,090.60x = 288,135.90 × 122,279.40
  4. Step 4: Simplify right side
    192,090.60x = 35,233,084,970.46
  5. Step 5: Solve for x
    x = 35,233,084,970.46/192,090.60
  6. Step 6: Final answer
    x = 183,419.10

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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.