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Finding the Fourth Proportional to 147,357.70, 203,353.63 and 80,289.70

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Solution

The fourth proportional to 147,357.70, 203,353.63 and 80,289.70 is: 110,799.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,357.70 : 203,353.63 = 80,289.70 : x
  2. Step 2: Convert to fraction form
    147,357.70/203,353.63 = 80,289.70/x
  3. Step 3: Cross multiply
    147,357.70x = 203,353.63 × 80,289.70
  4. Step 4: Simplify right side
    147,357.70x = 16,327,201,237.50
  5. Step 5: Solve for x
    x = 16,327,201,237.50/147,357.70
  6. Step 6: Final answer
    x = 110,799.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.