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Finding the Fourth Proportional to 101,764.72, 140,406.60 and 65,956.24

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Solution

The fourth proportional to 101,764.72, 140,406.60 and 65,956.24 is: 91,001.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,764.72 : 140,406.60 = 65,956.24 : x
  2. Step 2: Convert to fraction form
    101,764.72/140,406.60 = 65,956.24/x
  3. Step 3: Cross multiply
    101,764.72x = 140,406.60 × 65,956.24
  4. Step 4: Simplify right side
    101,764.72x = 9,260,691,407.18
  5. Step 5: Solve for x
    x = 9,260,691,407.18/101,764.72
  6. Step 6: Final answer
    x = 91,001.00

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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.