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Finding the Fourth Proportional to 129,927.20, 195,036.60 and 100,475.60

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Solution

The fourth proportional to 129,927.20, 195,036.60 and 100,475.60 is: 150,826.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,927.20 : 195,036.60 = 100,475.60 : x
  2. Step 2: Convert to fraction form
    129,927.20/195,036.60 = 100,475.60/x
  3. Step 3: Cross multiply
    129,927.20x = 195,036.60 × 100,475.60
  4. Step 4: Simplify right side
    129,927.20x = 19,596,419,406.96
  5. Step 5: Solve for x
    x = 19,596,419,406.96/129,927.20
  6. Step 6: Final answer
    x = 150,826.15

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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.