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Finding the Fourth Proportional to 100,672.40, 150,680.01 and 74,011.34

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Solution

The fourth proportional to 100,672.40, 150,680.01 and 74,011.34 is: 110,775.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,672.40 : 150,680.01 = 74,011.34 : x
  2. Step 2: Convert to fraction form
    100,672.40/150,680.01 = 74,011.34/x
  3. Step 3: Cross multiply
    100,672.40x = 150,680.01 × 74,011.34
  4. Step 4: Simplify right side
    100,672.40x = 11,152,029,257.98
  5. Step 5: Solve for x
    x = 11,152,029,257.98/100,672.40
  6. Step 6: Final answer
    x = 110,775.44

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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.