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Finding the Fourth Proportional to 118,480.29, 177,720.39 and 47,434.89

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Solution

The fourth proportional to 118,480.29, 177,720.39 and 47,434.89 is: 71,152.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,480.29 : 177,720.39 = 47,434.89 : x
  2. Step 2: Convert to fraction form
    118,480.29/177,720.39 = 47,434.89/x
  3. Step 3: Cross multiply
    118,480.29x = 177,720.39 × 47,434.89
  4. Step 4: Simplify right side
    118,480.29x = 8,430,147,150.41
  5. Step 5: Solve for x
    x = 8,430,147,150.41/118,480.29
  6. Step 6: Final answer
    x = 71,152.32

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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.