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Finding the Fourth Proportional to 105,003.60, 157,505.40 and 100,629.60

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Solution

The fourth proportional to 105,003.60, 157,505.40 and 100,629.60 is: 150,944.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,003.60 : 157,505.40 = 100,629.60 : x
  2. Step 2: Convert to fraction form
    105,003.60/157,505.40 = 100,629.60/x
  3. Step 3: Cross multiply
    105,003.60x = 157,505.40 × 100,629.60
  4. Step 4: Simplify right side
    105,003.60x = 15,849,705,399.84
  5. Step 5: Solve for x
    x = 15,849,705,399.84/105,003.60
  6. Step 6: Final answer
    x = 150,944.40

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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.