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Finding the Fourth Proportional to 180,236.72, 248,725.32 and 100,748.72

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Solution

The fourth proportional to 180,236.72, 248,725.32 and 100,748.72 is: 139,032.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,236.72 : 248,725.32 = 100,748.72 : x
  2. Step 2: Convert to fraction form
    180,236.72/248,725.32 = 100,748.72/x
  3. Step 3: Cross multiply
    180,236.72x = 248,725.32 × 100,748.72
  4. Step 4: Simplify right side
    180,236.72x = 25,058,757,621.59
  5. Step 5: Solve for x
    x = 25,058,757,621.59/180,236.72
  6. Step 6: Final answer
    x = 139,032.48

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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.