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Finding the Fourth Proportional to 101,975.60, 152,679.84 and 76,940.08

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Solution

The fourth proportional to 101,975.60, 152,679.84 and 76,940.08 is: 115,196.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,975.60 : 152,679.84 = 76,940.08 : x
  2. Step 2: Convert to fraction form
    101,975.60/152,679.84 = 76,940.08/x
  3. Step 3: Cross multiply
    101,975.60x = 152,679.84 × 76,940.08
  4. Step 4: Simplify right side
    101,975.60x = 11,747,199,103.99
  5. Step 5: Solve for x
    x = 11,747,199,103.99/101,975.60
  6. Step 6: Final answer
    x = 115,196.18

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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.