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Finding the Fourth Proportional to 117,698.79, 162,422.41 and 63,985.16

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Solution

The fourth proportional to 117,698.79, 162,422.41 and 63,985.16 is: 88,298.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,698.79 : 162,422.41 = 63,985.16 : x
  2. Step 2: Convert to fraction form
    117,698.79/162,422.41 = 63,985.16/x
  3. Step 3: Cross multiply
    117,698.79x = 162,422.41 × 63,985.16
  4. Step 4: Simplify right side
    117,698.79x = 10,392,623,891.44
  5. Step 5: Solve for x
    x = 10,392,623,891.44/117,698.79
  6. Step 6: Final answer
    x = 88,298.48

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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.