Home / 138,313.67-190,954.20-130,342.05

Finding the Fourth Proportional to 138,313.67, 190,954.20 and 130,342.05

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Solution

The fourth proportional to 138,313.67, 190,954.20 and 130,342.05 is: 179,948.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,313.67 : 190,954.20 = 130,342.05 : x
  2. Step 2: Convert to fraction form
    138,313.67/190,954.20 = 130,342.05/x
  3. Step 3: Cross multiply
    138,313.67x = 190,954.20 × 130,342.05
  4. Step 4: Simplify right side
    138,313.67x = 24,889,361,884.11
  5. Step 5: Solve for x
    x = 24,889,361,884.11/138,313.67
  6. Step 6: Final answer
    x = 179,948.68

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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.