Home / 138,227.96-190,764.24-77,804.40

Finding the Fourth Proportional to 138,227.96, 190,764.24 and 77,804.40

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Solution

The fourth proportional to 138,227.96, 190,764.24 and 77,804.40 is: 107,375.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,227.96 : 190,764.24 = 77,804.40 : x
  2. Step 2: Convert to fraction form
    138,227.96/190,764.24 = 77,804.40/x
  3. Step 3: Cross multiply
    138,227.96x = 190,764.24 × 77,804.40
  4. Step 4: Simplify right side
    138,227.96x = 14,842,297,234.66
  5. Step 5: Solve for x
    x = 14,842,297,234.66/138,227.96
  6. Step 6: Final answer
    x = 107,375.51

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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.