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Finding the Fourth Proportional to 144,873.06, 217,372 and 78,360

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Solution

The fourth proportional to 144,873.06, 217,372 and 78,360 is: 117,573.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,873.06 : 217,372 = 78,360 : x
  2. Step 2: Convert to fraction form
    144,873.06/217,372 = 78,360/x
  3. Step 3: Cross multiply
    144,873.06x = 217,372 × 78,360
  4. Step 4: Simplify right side
    144,873.06x = 17,033,269,920
  5. Step 5: Solve for x
    x = 17,033,269,920/144,873.06
  6. Step 6: Final answer
    x = 117,573.76

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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.