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Finding the Fourth Proportional to 119,474.70, 179,236.55 and 99,890.12

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Solution

The fourth proportional to 119,474.70, 179,236.55 and 99,890.12 is: 149,855.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,474.70 : 179,236.55 = 99,890.12 : x
  2. Step 2: Convert to fraction form
    119,474.70/179,236.55 = 99,890.12/x
  3. Step 3: Cross multiply
    119,474.70x = 179,236.55 × 99,890.12
  4. Step 4: Simplify right side
    119,474.70x = 17,903,959,841.43
  5. Step 5: Solve for x
    x = 17,903,959,841.43/119,474.70
  6. Step 6: Final answer
    x = 149,855.66

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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.