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Finding the Fourth Proportional to 117,936.88, 162,748 and 64,221.78

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Solution

The fourth proportional to 117,936.88, 162,748 and 64,221.78 is: 88,623.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,936.88 : 162,748 = 64,221.78 : x
  2. Step 2: Convert to fraction form
    117,936.88/162,748 = 64,221.78/x
  3. Step 3: Cross multiply
    117,936.88x = 162,748 × 64,221.78
  4. Step 4: Simplify right side
    117,936.88x = 10,451,966,251.44
  5. Step 5: Solve for x
    x = 10,451,966,251.44/117,936.88
  6. Step 6: Final answer
    x = 88,623.39

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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.