Home / 133,221.36-183,839.66-72,789.16

Finding the Fourth Proportional to 133,221.36, 183,839.66 and 72,789.16

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Solution

The fourth proportional to 133,221.36, 183,839.66 and 72,789.16 is: 100,445.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,221.36 : 183,839.66 = 72,789.16 : x
  2. Step 2: Convert to fraction form
    133,221.36/183,839.66 = 72,789.16/x
  3. Step 3: Cross multiply
    133,221.36x = 183,839.66 × 72,789.16
  4. Step 4: Simplify right side
    133,221.36x = 13,381,534,426.09
  5. Step 5: Solve for x
    x = 13,381,534,426.09/133,221.36
  6. Step 6: Final answer
    x = 100,445.86

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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.