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Finding the Fourth Proportional to 130,018.20, 195,027.30 and 79,935.90

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Solution

The fourth proportional to 130,018.20, 195,027.30 and 79,935.90 is: 119,903.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,018.20 : 195,027.30 = 79,935.90 : x
  2. Step 2: Convert to fraction form
    130,018.20/195,027.30 = 79,935.90/x
  3. Step 3: Cross multiply
    130,018.20x = 195,027.30 × 79,935.90
  4. Step 4: Simplify right side
    130,018.20x = 15,589,682,750.07
  5. Step 5: Solve for x
    x = 15,589,682,750.07/130,018.20
  6. Step 6: Final answer
    x = 119,903.85

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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.