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Finding the Fourth Proportional to 118,389.27, 177,578.12 and 43,503.65

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Solution

The fourth proportional to 118,389.27, 177,578.12 and 43,503.65 is: 65,253.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,389.27 : 177,578.12 = 43,503.65 : x
  2. Step 2: Convert to fraction form
    118,389.27/177,578.12 = 43,503.65/x
  3. Step 3: Cross multiply
    118,389.27x = 177,578.12 × 43,503.65
  4. Step 4: Simplify right side
    118,389.27x = 7,725,295,601.01
  5. Step 5: Solve for x
    x = 7,725,295,601.01/118,389.27
  6. Step 6: Final answer
    x = 65,253.34

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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.