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Finding the Fourth Proportional to 130,653.20, 195,688.20 and 100,974.80

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Solution

The fourth proportional to 130,653.20, 195,688.20 and 100,974.80 is: 151,236.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,653.20 : 195,688.20 = 100,974.80 : x
  2. Step 2: Convert to fraction form
    130,653.20/195,688.20 = 100,974.80/x
  3. Step 3: Cross multiply
    130,653.20x = 195,688.20 × 100,974.80
  4. Step 4: Simplify right side
    130,653.20x = 19,759,576,857.36
  5. Step 5: Solve for x
    x = 19,759,576,857.36/130,653.20
  6. Step 6: Final answer
    x = 151,236.84

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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.