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Finding the Fourth Proportional to 118,783.28, 178,173.42 and 28,826.73

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Solution

The fourth proportional to 118,783.28, 178,173.42 and 28,826.73 is: 43,239.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,783.28 : 178,173.42 = 28,826.73 : x
  2. Step 2: Convert to fraction form
    118,783.28/178,173.42 = 28,826.73/x
  3. Step 3: Cross multiply
    118,783.28x = 178,173.42 × 28,826.73
  4. Step 4: Simplify right side
    118,783.28x = 5,136,157,959.13
  5. Step 5: Solve for x
    x = 5,136,157,959.13/118,783.28
  6. Step 6: Final answer
    x = 43,239.74

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1.5x scale

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.