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Finding the Fourth Proportional to 97,659.78, 146,338.90 and 65,945.55

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Solution

The fourth proportional to 97,659.78, 146,338.90 and 65,945.55 is: 98,816.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,659.78 : 146,338.90 = 65,945.55 : x
  2. Step 2: Convert to fraction form
    97,659.78/146,338.90 = 65,945.55/x
  3. Step 3: Cross multiply
    97,659.78x = 146,338.90 × 65,945.55
  4. Step 4: Simplify right side
    97,659.78x = 9,650,399,082.03
  5. Step 5: Solve for x
    x = 9,650,399,082.03/97,659.78
  6. Step 6: Final answer
    x = 98,816.51

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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.