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Finding the Fourth Proportional to 147,390.98, 203,399.73 and 80,322.98

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Solution

The fourth proportional to 147,390.98, 203,399.73 and 80,322.98 is: 110,845.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,390.98 : 203,399.73 = 80,322.98 : x
  2. Step 2: Convert to fraction form
    147,390.98/203,399.73 = 80,322.98/x
  3. Step 3: Cross multiply
    147,390.98x = 203,399.73 × 80,322.98
  4. Step 4: Simplify right side
    147,390.98x = 16,337,672,444.80
  5. Step 5: Solve for x
    x = 16,337,672,444.80/147,390.98
  6. Step 6: Final answer
    x = 110,845.81

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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.