Home / 127,619.39-191,422.10-38,865.47

Finding the Fourth Proportional to 127,619.39, 191,422.10 and 38,865.47

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Solution

The fourth proportional to 127,619.39, 191,422.10 and 38,865.47 is: 58,296.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,619.39 : 191,422.10 = 38,865.47 : x
  2. Step 2: Convert to fraction form
    127,619.39/191,422.10 = 38,865.47/x
  3. Step 3: Cross multiply
    127,619.39x = 191,422.10 × 38,865.47
  4. Step 4: Simplify right side
    127,619.39x = 7,439,709,024.94
  5. Step 5: Solve for x
    x = 7,439,709,024.94/127,619.39
  6. Step 6: Final answer
    x = 58,296.07

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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.