Home / 138,914.64-191,719.56-82,347.60

Finding the Fourth Proportional to 138,914.64, 191,719.56 and 82,347.60

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Solution

The fourth proportional to 138,914.64, 191,719.56 and 82,347.60 is: 113,649.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,914.64 : 191,719.56 = 82,347.60 : x
  2. Step 2: Convert to fraction form
    138,914.64/191,719.56 = 82,347.60/x
  3. Step 3: Cross multiply
    138,914.64x = 191,719.56 × 82,347.60
  4. Step 4: Simplify right side
    138,914.64x = 15,787,645,639.06
  5. Step 5: Solve for x
    x = 15,787,645,639.06/138,914.64
  6. Step 6: Final answer
    x = 113,649.98

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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.