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Finding the Fourth Proportional to 97,701.80, 146,091.90 and 72,818.60

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Solution

The fourth proportional to 97,701.80, 146,091.90 and 72,818.60 is: 108,884.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,701.80 : 146,091.90 = 72,818.60 : x
  2. Step 2: Convert to fraction form
    97,701.80/146,091.90 = 72,818.60/x
  3. Step 3: Cross multiply
    97,701.80x = 146,091.90 × 72,818.60
  4. Step 4: Simplify right side
    97,701.80x = 10,638,207,629.34
  5. Step 5: Solve for x
    x = 10,638,207,629.34/97,701.80
  6. Step 6: Final answer
    x = 108,884.46

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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.