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Finding the Fourth Proportional to 133,199.56, 183,808.02 and 76,611.88

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Solution

The fourth proportional to 133,199.56, 183,808.02 and 76,611.88 is: 105,720.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,199.56 : 183,808.02 = 76,611.88 : x
  2. Step 2: Convert to fraction form
    133,199.56/183,808.02 = 76,611.88/x
  3. Step 3: Cross multiply
    133,199.56x = 183,808.02 × 76,611.88
  4. Step 4: Simplify right side
    133,199.56x = 14,081,877,971.28
  5. Step 5: Solve for x
    x = 14,081,877,971.28/133,199.56
  6. Step 6: Final answer
    x = 105,720.15

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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.