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Finding the Fourth Proportional to 119,274, 164,632.68 and 79,530

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Solution

The fourth proportional to 119,274, 164,632.68 and 79,530 is: 109,774.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,274 : 164,632.68 = 79,530 : x
  2. Step 2: Convert to fraction form
    119,274/164,632.68 = 79,530/x
  3. Step 3: Cross multiply
    119,274x = 164,632.68 × 79,530
  4. Step 4: Simplify right side
    119,274x = 13,093,237,040.40
  5. Step 5: Solve for x
    x = 13,093,237,040.40/119,274
  6. Step 6: Final answer
    x = 109,774.44

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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.