Home / 127,721.89-191,582.84-38,975.86

Finding the Fourth Proportional to 127,721.89, 191,582.84 and 38,975.86

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Solution

The fourth proportional to 127,721.89, 191,582.84 and 38,975.86 is: 58,463.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,721.89 : 191,582.84 = 38,975.86 : x
  2. Step 2: Convert to fraction form
    127,721.89/191,582.84 = 38,975.86/x
  3. Step 3: Cross multiply
    127,721.89x = 191,582.84 × 38,975.86
  4. Step 4: Simplify right side
    127,721.89x = 7,467,105,950.24
  5. Step 5: Solve for x
    x = 7,467,105,950.24/127,721.89
  6. Step 6: Final answer
    x = 58,463.79

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Similar ratio
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1.5x scale

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.