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Finding the Fourth Proportional to 139,746.66, 192,853.86 and 76,087.96

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Solution

The fourth proportional to 139,746.66, 192,853.86 and 76,087.96 is: 105,003.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,746.66 : 192,853.86 = 76,087.96 : x
  2. Step 2: Convert to fraction form
    139,746.66/192,853.86 = 76,087.96/x
  3. Step 3: Cross multiply
    139,746.66x = 192,853.86 × 76,087.96
  4. Step 4: Simplify right side
    139,746.66x = 14,673,856,785.53
  5. Step 5: Solve for x
    x = 14,673,856,785.53/139,746.66
  6. Step 6: Final answer
    x = 105,003.27

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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.