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Finding the Fourth Proportional to 114,909.60, 171,975.60 and 100,912.80

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Solution

The fourth proportional to 114,909.60, 171,975.60 and 100,912.80 is: 151,027.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,909.60 : 171,975.60 = 100,912.80 : x
  2. Step 2: Convert to fraction form
    114,909.60/171,975.60 = 100,912.80/x
  3. Step 3: Cross multiply
    114,909.60x = 171,975.60 × 100,912.80
  4. Step 4: Simplify right side
    114,909.60x = 17,354,539,327.68
  5. Step 5: Solve for x
    x = 17,354,539,327.68/114,909.60
  6. Step 6: Final answer
    x = 151,027.76

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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.