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Finding the Fourth Proportional to 133,076.32, 183,669.12 and 79,364.80

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Solution

The fourth proportional to 133,076.32, 183,669.12 and 79,364.80 is: 109,537.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,076.32 : 183,669.12 = 79,364.80 : x
  2. Step 2: Convert to fraction form
    133,076.32/183,669.12 = 79,364.80/x
  3. Step 3: Cross multiply
    133,076.32x = 183,669.12 × 79,364.80
  4. Step 4: Simplify right side
    133,076.32x = 14,576,862,974.98
  5. Step 5: Solve for x
    x = 14,576,862,974.98/133,076.32
  6. Step 6: Final answer
    x = 109,537.62

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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.