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Finding the Fourth Proportional to 97,791.80, 146,226.90 and 72,908.60

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Solution

The fourth proportional to 97,791.80, 146,226.90 and 72,908.60 is: 109,019.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,791.80 : 146,226.90 = 72,908.60 : x
  2. Step 2: Convert to fraction form
    97,791.80/146,226.90 = 72,908.60/x
  3. Step 3: Cross multiply
    97,791.80x = 146,226.90 × 72,908.60
  4. Step 4: Simplify right side
    97,791.80x = 10,661,198,561.34
  5. Step 5: Solve for x
    x = 10,661,198,561.34/97,791.80
  6. Step 6: Final answer
    x = 109,019.35

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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.