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Finding the Fourth Proportional to 133,049.68, 183,604 and 79,307

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Solution

The fourth proportional to 133,049.68, 183,604 and 79,307 is: 109,440.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,049.68 : 183,604 = 79,307 : x
  2. Step 2: Convert to fraction form
    133,049.68/183,604 = 79,307/x
  3. Step 3: Cross multiply
    133,049.68x = 183,604 × 79,307
  4. Step 4: Simplify right side
    133,049.68x = 14,561,082,428
  5. Step 5: Solve for x
    x = 14,561,082,428/133,049.68
  6. Step 6: Final answer
    x = 109,440.94

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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.