Home / 138,342.54-190,917.82-77,094.24

Finding the Fourth Proportional to 138,342.54, 190,917.82 and 77,094.24

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Solution

The fourth proportional to 138,342.54, 190,917.82 and 77,094.24 is: 106,392.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,342.54 : 190,917.82 = 77,094.24 : x
  2. Step 2: Convert to fraction form
    138,342.54/190,917.82 = 77,094.24/x
  3. Step 3: Cross multiply
    138,342.54x = 190,917.82 × 77,094.24
  4. Step 4: Simplify right side
    138,342.54x = 14,718,664,235.36
  5. Step 5: Solve for x
    x = 14,718,664,235.36/138,342.54
  6. Step 6: Final answer
    x = 106,392.90

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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.