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Finding the Fourth Proportional to 98,467.88, 147,738.17 and 79,666.76

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Solution

The fourth proportional to 98,467.88, 147,738.17 and 79,666.76 is: 119,529.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,467.88 : 147,738.17 = 79,666.76 : x
  2. Step 2: Convert to fraction form
    98,467.88/147,738.17 = 79,666.76/x
  3. Step 3: Cross multiply
    98,467.88x = 147,738.17 × 79,666.76
  4. Step 4: Simplify right side
    98,467.88x = 11,769,821,900.74
  5. Step 5: Solve for x
    x = 11,769,821,900.74/98,467.88
  6. Step 6: Final answer
    x = 119,529.56

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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.