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Finding the Fourth Proportional to 154,043.60, 231,065.40 and 122,939.60

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Solution

The fourth proportional to 154,043.60, 231,065.40 and 122,939.60 is: 184,409.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,043.60 : 231,065.40 = 122,939.60 : x
  2. Step 2: Convert to fraction form
    154,043.60/231,065.40 = 122,939.60/x
  3. Step 3: Cross multiply
    154,043.60x = 231,065.40 × 122,939.60
  4. Step 4: Simplify right side
    154,043.60x = 28,407,087,849.84
  5. Step 5: Solve for x
    x = 28,407,087,849.84/154,043.60
  6. Step 6: Final answer
    x = 184,409.40

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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.