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Finding the Fourth Proportional to 135,458.60, 203,418.30 and 100,437.80

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Solution

The fourth proportional to 135,458.60, 203,418.30 and 100,437.80 is: 150,827.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,458.60 : 203,418.30 = 100,437.80 : x
  2. Step 2: Convert to fraction form
    135,458.60/203,418.30 = 100,437.80/x
  3. Step 3: Cross multiply
    135,458.60x = 203,418.30 × 100,437.80
  4. Step 4: Simplify right side
    135,458.60x = 20,430,886,531.74
  5. Step 5: Solve for x
    x = 20,430,886,531.74/135,458.60
  6. Step 6: Final answer
    x = 150,827.53

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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.