Home / 138,145.87-190,539.25-95,139.02

Finding the Fourth Proportional to 138,145.87, 190,539.25 and 95,139.02

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Solution

The fourth proportional to 138,145.87, 190,539.25 and 95,139.02 is: 131,221.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,145.87 : 190,539.25 = 95,139.02 : x
  2. Step 2: Convert to fraction form
    138,145.87/190,539.25 = 95,139.02/x
  3. Step 3: Cross multiply
    138,145.87x = 190,539.25 × 95,139.02
  4. Step 4: Simplify right side
    138,145.87x = 18,127,716,563.84
  5. Step 5: Solve for x
    x = 18,127,716,563.84/138,145.87
  6. Step 6: Final answer
    x = 131,221.56

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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.