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Finding the Fourth Proportional to 117,495.32, 162,227.80 and 72,234

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Solution

The fourth proportional to 117,495.32, 162,227.80 and 72,234 is: 99,734.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,495.32 : 162,227.80 = 72,234 : x
  2. Step 2: Convert to fraction form
    117,495.32/162,227.80 = 72,234/x
  3. Step 3: Cross multiply
    117,495.32x = 162,227.80 × 72,234
  4. Step 4: Simplify right side
    117,495.32x = 11,718,362,905.20
  5. Step 5: Solve for x
    x = 11,718,362,905.20/117,495.32
  6. Step 6: Final answer
    x = 99,734.72

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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.