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Finding the Fourth Proportional to 118,170.56, 163,072.40 and 64,456.80

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Solution

The fourth proportional to 118,170.56, 163,072.40 and 64,456.80 is: 88,948.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,170.56 : 163,072.40 = 64,456.80 : x
  2. Step 2: Convert to fraction form
    118,170.56/163,072.40 = 64,456.80/x
  3. Step 3: Cross multiply
    118,170.56x = 163,072.40 × 64,456.80
  4. Step 4: Simplify right side
    118,170.56x = 10,511,125,072.32
  5. Step 5: Solve for x
    x = 10,511,125,072.32/118,170.56
  6. Step 6: Final answer
    x = 88,948.76

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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.