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Finding the Fourth Proportional to 156,546, 216,033.48 and 89,479.44

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Solution

The fourth proportional to 156,546, 216,033.48 and 89,479.44 is: 123,481.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,546 : 216,033.48 = 89,479.44 : x
  2. Step 2: Convert to fraction form
    156,546/216,033.48 = 89,479.44/x
  3. Step 3: Cross multiply
    156,546x = 216,033.48 × 89,479.44
  4. Step 4: Simplify right side
    156,546x = 19,330,554,811.65
  5. Step 5: Solve for x
    x = 19,330,554,811.65/156,546
  6. Step 6: Final answer
    x = 123,481.63

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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.