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Finding the Fourth Proportional to 133,485.64, 200,228.40 and 39,991.39

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Solution

The fourth proportional to 133,485.64, 200,228.40 and 39,991.39 is: 59,987.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,485.64 : 200,228.40 = 39,991.39 : x
  2. Step 2: Convert to fraction form
    133,485.64/200,228.40 = 39,991.39/x
  3. Step 3: Cross multiply
    133,485.64x = 200,228.40 × 39,991.39
  4. Step 4: Simplify right side
    133,485.64x = 8,007,412,033.48
  5. Step 5: Solve for x
    x = 8,007,412,033.48/133,485.64
  6. Step 6: Final answer
    x = 59,987.07

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1.5x scale

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.