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Finding the Fourth Proportional to 133,241.49, 183,878.20 and 72,816.20

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Solution

The fourth proportional to 133,241.49, 183,878.20 and 72,816.20 is: 100,489.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,241.49 : 183,878.20 = 72,816.20 : x
  2. Step 2: Convert to fraction form
    133,241.49/183,878.20 = 72,816.20/x
  3. Step 3: Cross multiply
    133,241.49x = 183,878.20 × 72,816.20
  4. Step 4: Simplify right side
    133,241.49x = 13,389,311,648.01
  5. Step 5: Solve for x
    x = 13,389,311,648.01/133,241.49
  6. Step 6: Final answer
    x = 100,489.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.