Home / 127,628.21-191,470.86-38,888.66

Finding the Fourth Proportional to 127,628.21, 191,470.86 and 38,888.66

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Solution

The fourth proportional to 127,628.21, 191,470.86 and 38,888.66 is: 58,341.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,628.21 : 191,470.86 = 38,888.66 : x
  2. Step 2: Convert to fraction form
    127,628.21/191,470.86 = 38,888.66/x
  3. Step 3: Cross multiply
    127,628.21x = 191,470.86 × 38,888.66
  4. Step 4: Simplify right side
    127,628.21x = 7,446,044,217.09
  5. Step 5: Solve for x
    x = 7,446,044,217.09/127,628.21
  6. Step 6: Final answer
    x = 58,341.68

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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.