Home / 118,835.64-163,992.24-65,120.58

Finding the Fourth Proportional to 118,835.64, 163,992.24 and 65,120.58

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Solution

The fourth proportional to 118,835.64, 163,992.24 and 65,120.58 is: 89,865.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,835.64 : 163,992.24 = 65,120.58 : x
  2. Step 2: Convert to fraction form
    118,835.64/163,992.24 = 65,120.58/x
  3. Step 3: Cross multiply
    118,835.64x = 163,992.24 × 65,120.58
  4. Step 4: Simplify right side
    118,835.64x = 10,679,269,784.30
  5. Step 5: Solve for x
    x = 10,679,269,784.30/118,835.64
  6. Step 6: Final answer
    x = 89,865.88

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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.