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Finding the Fourth Proportional to 116,986.40, 161,440.72 and 63,271.48

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Solution

The fourth proportional to 116,986.40, 161,440.72 and 63,271.48 is: 87,314.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,986.40 : 161,440.72 = 63,271.48 : x
  2. Step 2: Convert to fraction form
    116,986.40/161,440.72 = 63,271.48/x
  3. Step 3: Cross multiply
    116,986.40x = 161,440.72 × 63,271.48
  4. Step 4: Simplify right side
    116,986.40x = 10,214,593,286.67
  5. Step 5: Solve for x
    x = 10,214,593,286.67/116,986.40
  6. Step 6: Final answer
    x = 87,314.37

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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.