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Finding the Fourth Proportional to 117,634, 162,334.92 and 64,642

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Solution

The fourth proportional to 117,634, 162,334.92 and 64,642 is: 89,205.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,634 : 162,334.92 = 64,642 : x
  2. Step 2: Convert to fraction form
    117,634/162,334.92 = 64,642/x
  3. Step 3: Cross multiply
    117,634x = 162,334.92 × 64,642
  4. Step 4: Simplify right side
    117,634x = 10,493,653,898.64
  5. Step 5: Solve for x
    x = 10,493,653,898.64/117,634
  6. Step 6: Final answer
    x = 89,205.96

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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.