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Finding the Fourth Proportional to 100,312.68, 150,339.42 and 47,738.28

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Solution

The fourth proportional to 100,312.68, 150,339.42 and 47,738.28 is: 71,545.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,312.68 : 150,339.42 = 47,738.28 : x
  2. Step 2: Convert to fraction form
    100,312.68/150,339.42 = 47,738.28/x
  3. Step 3: Cross multiply
    100,312.68x = 150,339.42 × 47,738.28
  4. Step 4: Simplify right side
    100,312.68x = 7,176,945,327.00
  5. Step 5: Solve for x
    x = 7,176,945,327.00/100,312.68
  6. Step 6: Final answer
    x = 71,545.74

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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.