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Finding the Fourth Proportional to 119,586.60, 179,034.30 and 72,930.60

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Solution

The fourth proportional to 119,586.60, 179,034.30 and 72,930.60 is: 109,185.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,586.60 : 179,034.30 = 72,930.60 : x
  2. Step 2: Convert to fraction form
    119,586.60/179,034.30 = 72,930.60/x
  3. Step 3: Cross multiply
    119,586.60x = 179,034.30 × 72,930.60
  4. Step 4: Simplify right side
    119,586.60x = 13,057,078,919.58
  5. Step 5: Solve for x
    x = 13,057,078,919.58/119,586.60
  6. Step 6: Final answer
    x = 109,185.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.