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Finding the Fourth Proportional to 147,390, 203,399.64 and 80,323.44

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Solution

The fourth proportional to 147,390, 203,399.64 and 80,323.44 is: 110,847.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,390 : 203,399.64 = 80,323.44 : x
  2. Step 2: Convert to fraction form
    147,390/203,399.64 = 80,323.44/x
  3. Step 3: Cross multiply
    147,390x = 203,399.64 × 80,323.44
  4. Step 4: Simplify right side
    147,390x = 16,337,758,779.56
  5. Step 5: Solve for x
    x = 16,337,758,779.56/147,390
  6. Step 6: Final answer
    x = 110,847.13

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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.