Home / 126,785.51-190,209.86-38,040.65

Finding the Fourth Proportional to 126,785.51, 190,209.86 and 38,040.65

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Solution

The fourth proportional to 126,785.51, 190,209.86 and 38,040.65 is: 57,070.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,785.51 : 190,209.86 = 38,040.65 : x
  2. Step 2: Convert to fraction form
    126,785.51/190,209.86 = 38,040.65/x
  3. Step 3: Cross multiply
    126,785.51x = 190,209.86 × 38,040.65
  4. Step 4: Simplify right side
    126,785.51x = 7,235,705,569.56
  5. Step 5: Solve for x
    x = 7,235,705,569.56/126,785.51
  6. Step 6: Final answer
    x = 57,070.45

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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.