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Finding the Fourth Proportional to 117,359.50, 161,956.20 and 63,644.50

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Solution

The fourth proportional to 117,359.50, 161,956.20 and 63,644.50 is: 87,829.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,359.50 : 161,956.20 = 63,644.50 : x
  2. Step 2: Convert to fraction form
    117,359.50/161,956.20 = 63,644.50/x
  3. Step 3: Cross multiply
    117,359.50x = 161,956.20 × 63,644.50
  4. Step 4: Simplify right side
    117,359.50x = 10,307,621,370.90
  5. Step 5: Solve for x
    x = 10,307,621,370.90/117,359.50
  6. Step 6: Final answer
    x = 87,829.46

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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.