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Finding the Fourth Proportional to 110,749.69, 152,782.65 and 65,396.77

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Solution

The fourth proportional to 110,749.69, 152,782.65 and 65,396.77 is: 90,216.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,749.69 : 152,782.65 = 65,396.77 : x
  2. Step 2: Convert to fraction form
    110,749.69/152,782.65 = 65,396.77/x
  3. Step 3: Cross multiply
    110,749.69x = 152,782.65 × 65,396.77
  4. Step 4: Simplify right side
    110,749.69x = 9,991,491,822.04
  5. Step 5: Solve for x
    x = 9,991,491,822.04/110,749.69
  6. Step 6: Final answer
    x = 90,216.88

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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.