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Finding the Fourth Proportional to 216,795.69, 299,190.11 and 126,153.45

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Solution

The fourth proportional to 216,795.69, 299,190.11 and 126,153.45 is: 174,098.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,795.69 : 299,190.11 = 126,153.45 : x
  2. Step 2: Convert to fraction form
    216,795.69/299,190.11 = 126,153.45/x
  3. Step 3: Cross multiply
    216,795.69x = 299,190.11 × 126,153.45
  4. Step 4: Simplify right side
    216,795.69x = 37,743,863,951.61
  5. Step 5: Solve for x
    x = 37,743,863,951.61/216,795.69
  6. Step 6: Final answer
    x = 174,098.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.