Home / 133,218.36-183,835.53-72,786.15

Finding the Fourth Proportional to 133,218.36, 183,835.53 and 72,786.15

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Solution

The fourth proportional to 133,218.36, 183,835.53 and 72,786.15 is: 100,441.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,218.36 : 183,835.53 = 72,786.15 : x
  2. Step 2: Convert to fraction form
    133,218.36/183,835.53 = 72,786.15/x
  3. Step 3: Cross multiply
    133,218.36x = 183,835.53 × 72,786.15
  4. Step 4: Simplify right side
    133,218.36x = 13,380,680,461.91
  5. Step 5: Solve for x
    x = 13,380,680,461.91/133,218.36
  6. Step 6: Final answer
    x = 100,441.71

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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.