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Finding the Fourth Proportional to 104,180.50, 143,739.92 and 65,422.50

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Solution

The fourth proportional to 104,180.50, 143,739.92 and 65,422.50 is: 90,264.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,180.50 : 143,739.92 = 65,422.50 : x
  2. Step 2: Convert to fraction form
    104,180.50/143,739.92 = 65,422.50/x
  3. Step 3: Cross multiply
    104,180.50x = 143,739.92 × 65,422.50
  4. Step 4: Simplify right side
    104,180.50x = 9,403,825,357.33
  5. Step 5: Solve for x
    x = 9,403,825,357.33/104,180.50
  6. Step 6: Final answer
    x = 90,264.73

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1.5x scale

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.