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Finding the Fourth Proportional to 145,373.22, 218,057.09 and 79,234.25

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Solution

The fourth proportional to 145,373.22, 218,057.09 and 79,234.25 is: 118,849.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,373.22 : 218,057.09 = 79,234.25 : x
  2. Step 2: Convert to fraction form
    145,373.22/218,057.09 = 79,234.25/x
  3. Step 3: Cross multiply
    145,373.22x = 218,057.09 × 79,234.25
  4. Step 4: Simplify right side
    145,373.22x = 17,277,588,496.88
  5. Step 5: Solve for x
    x = 17,277,588,496.88/145,373.22
  6. Step 6: Final answer
    x = 118,849.87

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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.