Home / 127,239.14-190,829.54-57,138.50

Finding the Fourth Proportional to 127,239.14, 190,829.54 and 57,138.50

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Solution

The fourth proportional to 127,239.14, 190,829.54 and 57,138.50 is: 85,694.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,239.14 : 190,829.54 = 57,138.50 : x
  2. Step 2: Convert to fraction form
    127,239.14/190,829.54 = 57,138.50/x
  3. Step 3: Cross multiply
    127,239.14x = 190,829.54 × 57,138.50
  4. Step 4: Simplify right side
    127,239.14x = 10,903,713,671.29
  5. Step 5: Solve for x
    x = 10,903,713,671.29/127,239.14
  6. Step 6: Final answer
    x = 85,694.65

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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.