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Finding the Fourth Proportional to 117,415.80, 162,033.84 and 63,701.64

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Solution

The fourth proportional to 117,415.80, 162,033.84 and 63,701.64 is: 87,908.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,415.80 : 162,033.84 = 63,701.64 : x
  2. Step 2: Convert to fraction form
    117,415.80/162,033.84 = 63,701.64/x
  3. Step 3: Cross multiply
    117,415.80x = 162,033.84 × 63,701.64
  4. Step 4: Simplify right side
    117,415.80x = 10,321,821,343.50
  5. Step 5: Solve for x
    x = 10,321,821,343.50/117,415.80
  6. Step 6: Final answer
    x = 87,908.28

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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.