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Finding the Fourth Proportional to 101,615.71, 140,229.68 and 55,675.54

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Solution

The fourth proportional to 101,615.71, 140,229.68 and 55,675.54 is: 76,832.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,615.71 : 140,229.68 = 55,675.54 : x
  2. Step 2: Convert to fraction form
    101,615.71/140,229.68 = 55,675.54/x
  3. Step 3: Cross multiply
    101,615.71x = 140,229.68 × 55,675.54
  4. Step 4: Simplify right side
    101,615.71x = 7,807,362,879.65
  5. Step 5: Solve for x
    x = 7,807,362,879.65/101,615.71
  6. Step 6: Final answer
    x = 76,832.25

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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.