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Finding the Fourth Proportional to 118,790.54, 163,930.95 and 71,043.89

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Solution

The fourth proportional to 118,790.54, 163,930.95 and 71,043.89 is: 98,040.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,790.54 : 163,930.95 = 71,043.89 : x
  2. Step 2: Convert to fraction form
    118,790.54/163,930.95 = 71,043.89/x
  3. Step 3: Cross multiply
    118,790.54x = 163,930.95 × 71,043.89
  4. Step 4: Simplify right side
    118,790.54x = 11,646,292,481.85
  5. Step 5: Solve for x
    x = 11,646,292,481.85/118,790.54
  6. Step 6: Final answer
    x = 98,040.57

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1.5x scale

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.