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Finding the Fourth Proportional to 133,082.76, 183,636.78 and 79,374.08

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Solution

The fourth proportional to 133,082.76, 183,636.78 and 79,374.08 is: 109,525.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,082.76 : 183,636.78 = 79,374.08 : x
  2. Step 2: Convert to fraction form
    133,082.76/183,636.78 = 79,374.08/x
  3. Step 3: Cross multiply
    133,082.76x = 183,636.78 × 79,374.08
  4. Step 4: Simplify right side
    133,082.76x = 14,576,000,466.66
  5. Step 5: Solve for x
    x = 14,576,000,466.66/133,082.76
  6. Step 6: Final answer
    x = 109,525.84

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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.