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Finding the Fourth Proportional to 117,645.46, 162,374.31 and 69,889.58

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Solution

The fourth proportional to 117,645.46, 162,374.31 and 69,889.58 is: 96,461.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,645.46 : 162,374.31 = 69,889.58 : x
  2. Step 2: Convert to fraction form
    117,645.46/162,374.31 = 69,889.58/x
  3. Step 3: Cross multiply
    117,645.46x = 162,374.31 × 69,889.58
  4. Step 4: Simplify right side
    117,645.46x = 11,348,271,979.24
  5. Step 5: Solve for x
    x = 11,348,271,979.24/117,645.46
  6. Step 6: Final answer
    x = 96,461.63

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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.