Home / 187,814,351.35-281,721,535.79-128,668,408.92

Finding the Fourth Proportional to 187,814,351.35, 281,721,535.79 and 128,668,408.92

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Solution

The fourth proportional to 187,814,351.35, 281,721,535.79 and 128,668,408.92 is: 193,002,619.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,814,351.35 : 281,721,535.79 = 128,668,408.92 : x
  2. Step 2: Convert to fraction form
    187,814,351.35/281,721,535.79 = 128,668,408.92/x
  3. Step 3: Cross multiply
    187,814,351.35x = 281,721,535.79 × 128,668,408.92
  4. Step 4: Simplify right side
    187,814,351.35x = 36,248,661,769,505,216
  5. Step 5: Solve for x
    x = 36,248,661,769,505,216/187,814,351.35
  6. Step 6: Final answer
    x = 193,002,619.39

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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.