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Finding the Fourth Proportional to 133,054.40, 199,727.40 and 83,190.80

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Solution

The fourth proportional to 133,054.40, 199,727.40 and 83,190.80 is: 124,877.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,054.40 : 199,727.40 = 83,190.80 : x
  2. Step 2: Convert to fraction form
    133,054.40/199,727.40 = 83,190.80/x
  3. Step 3: Cross multiply
    133,054.40x = 199,727.40 × 83,190.80
  4. Step 4: Simplify right side
    133,054.40x = 16,615,482,187.92
  5. Step 5: Solve for x
    x = 16,615,482,187.92/133,054.40
  6. Step 6: Final answer
    x = 124,877.36

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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.