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Finding the Fourth Proportional to 133,200.56, 183,809.40 and 76,612.88

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Solution

The fourth proportional to 133,200.56, 183,809.40 and 76,612.88 is: 105,721.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,200.56 : 183,809.40 = 76,612.88 : x
  2. Step 2: Convert to fraction form
    133,200.56/183,809.40 = 76,612.88/x
  3. Step 3: Cross multiply
    133,200.56x = 183,809.40 × 76,612.88
  4. Step 4: Simplify right side
    133,200.56x = 14,082,167,505.07
  5. Step 5: Solve for x
    x = 14,082,167,505.07/133,200.56
  6. Step 6: Final answer
    x = 105,721.53

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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.