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Finding the Fourth Proportional to 100,939.60, 151,409.40 and 100,939.60

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Solution

The fourth proportional to 100,939.60, 151,409.40 and 100,939.60 is: 151,409.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,939.60 : 151,409.40 = 100,939.60 : x
  2. Step 2: Convert to fraction form
    100,939.60/151,409.40 = 100,939.60/x
  3. Step 3: Cross multiply
    100,939.60x = 151,409.40 × 100,939.60
  4. Step 4: Simplify right side
    100,939.60x = 15,283,204,272.24
  5. Step 5: Solve for x
    x = 15,283,204,272.24/100,939.60
  6. Step 6: Final answer
    x = 151,409.40

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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.