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Finding the Fourth Proportional to 118,223.40, 177,335.10 and 73,986.60

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Solution

The fourth proportional to 118,223.40, 177,335.10 and 73,986.60 is: 110,979.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,223.40 : 177,335.10 = 73,986.60 : x
  2. Step 2: Convert to fraction form
    118,223.40/177,335.10 = 73,986.60/x
  3. Step 3: Cross multiply
    118,223.40x = 177,335.10 × 73,986.60
  4. Step 4: Simplify right side
    118,223.40x = 13,120,421,109.66
  5. Step 5: Solve for x
    x = 13,120,421,109.66/118,223.40
  6. Step 6: Final answer
    x = 110,979.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.