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Finding the Fourth Proportional to 145,212.40, 217,818.60 and 113,719.60

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Solution

The fourth proportional to 145,212.40, 217,818.60 and 113,719.60 is: 170,579.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,212.40 : 217,818.60 = 113,719.60 : x
  2. Step 2: Convert to fraction form
    145,212.40/217,818.60 = 113,719.60/x
  3. Step 3: Cross multiply
    145,212.40x = 217,818.60 × 113,719.60
  4. Step 4: Simplify right side
    145,212.40x = 24,770,244,064.56
  5. Step 5: Solve for x
    x = 24,770,244,064.56/145,212.40
  6. Step 6: Final answer
    x = 170,579.40

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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.