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Finding the Fourth Proportional to 130,018.60, 195,027.90 and 103,774.60

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Solution

The fourth proportional to 130,018.60, 195,027.90 and 103,774.60 is: 155,661.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,018.60 : 195,027.90 = 103,774.60 : x
  2. Step 2: Convert to fraction form
    130,018.60/195,027.90 = 103,774.60/x
  3. Step 3: Cross multiply
    130,018.60x = 195,027.90 × 103,774.60
  4. Step 4: Simplify right side
    130,018.60x = 20,238,942,311.34
  5. Step 5: Solve for x
    x = 20,238,942,311.34/130,018.60
  6. Step 6: Final answer
    x = 155,661.90

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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.