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Finding the Fourth Proportional to 118,151.12, 177,300.44 and 78,735.88

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Solution

The fourth proportional to 118,151.12, 177,300.44 and 78,735.88 is: 118,152.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,151.12 : 177,300.44 = 78,735.88 : x
  2. Step 2: Convert to fraction form
    118,151.12/177,300.44 = 78,735.88/x
  3. Step 3: Cross multiply
    118,151.12x = 177,300.44 × 78,735.88
  4. Step 4: Simplify right side
    118,151.12x = 13,959,906,167.79
  5. Step 5: Solve for x
    x = 13,959,906,167.79/118,151.12
  6. Step 6: Final answer
    x = 118,152.97

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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.