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Finding the Fourth Proportional to 117,495.78, 162,228.42 and 72,234.48

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Solution

The fourth proportional to 117,495.78, 162,228.42 and 72,234.48 is: 99,735.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,495.78 : 162,228.42 = 72,234.48 : x
  2. Step 2: Convert to fraction form
    117,495.78/162,228.42 = 72,234.48/x
  3. Step 3: Cross multiply
    117,495.78x = 162,228.42 × 72,234.48
  4. Step 4: Simplify right side
    117,495.78x = 11,718,485,559.92
  5. Step 5: Solve for x
    x = 11,718,485,559.92/117,495.78
  6. Step 6: Final answer
    x = 99,735.37

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1.5x scale

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.