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Finding the Fourth Proportional to 159,219.09, 219,813.01 and 105,576.55

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Solution

The fourth proportional to 159,219.09, 219,813.01 and 105,576.55 is: 145,755.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,219.09 : 219,813.01 = 105,576.55 : x
  2. Step 2: Convert to fraction form
    159,219.09/219,813.01 = 105,576.55/x
  3. Step 3: Cross multiply
    159,219.09x = 219,813.01 × 105,576.55
  4. Step 4: Simplify right side
    159,219.09x = 23,207,098,427.44
  5. Step 5: Solve for x
    x = 23,207,098,427.44/159,219.09
  6. Step 6: Final answer
    x = 145,755.75

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1.5x scale

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.