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Finding the Fourth Proportional to 133,172.52, 183,783.54 and 76,583.88

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Solution

The fourth proportional to 133,172.52, 183,783.54 and 76,583.88 is: 105,688.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,172.52 : 183,783.54 = 76,583.88 : x
  2. Step 2: Convert to fraction form
    133,172.52/183,783.54 = 76,583.88/x
  3. Step 3: Cross multiply
    133,172.52x = 183,783.54 × 76,583.88
  4. Step 4: Simplify right side
    133,172.52x = 14,074,856,573.34
  5. Step 5: Solve for x
    x = 14,074,856,573.34/133,172.52
  6. Step 6: Final answer
    x = 105,688.90

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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.