Home / 127,139.40-190,716.39-38,401.88

Finding the Fourth Proportional to 127,139.40, 190,716.39 and 38,401.88

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Solution

The fourth proportional to 127,139.40, 190,716.39 and 38,401.88 is: 57,605.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,139.40 : 190,716.39 = 38,401.88 : x
  2. Step 2: Convert to fraction form
    127,139.40/190,716.39 = 38,401.88/x
  3. Step 3: Cross multiply
    127,139.40x = 190,716.39 × 38,401.88
  4. Step 4: Simplify right side
    127,139.40x = 7,323,866,969.23
  5. Step 5: Solve for x
    x = 7,323,866,969.23/127,139.40
  6. Step 6: Final answer
    x = 57,605.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.