Home / 127,139.80-190,711.14-38,394.04

Finding the Fourth Proportional to 127,139.80, 190,711.14 and 38,394.04

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Solution

The fourth proportional to 127,139.80, 190,711.14 and 38,394.04 is: 57,591.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,139.80 : 190,711.14 = 38,394.04 : x
  2. Step 2: Convert to fraction form
    127,139.80/190,711.14 = 38,394.04/x
  3. Step 3: Cross multiply
    127,139.80x = 190,711.14 × 38,394.04
  4. Step 4: Simplify right side
    127,139.80x = 7,322,171,137.61
  5. Step 5: Solve for x
    x = 7,322,171,137.61/127,139.80
  6. Step 6: Final answer
    x = 57,591.49

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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.