Home / 187,911.17-281,571.12-145,320.86

Finding the Fourth Proportional to 187,911.17, 281,571.12 and 145,320.86

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Solution

The fourth proportional to 187,911.17, 281,571.12 and 145,320.86 is: 217,752.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,911.17 : 281,571.12 = 145,320.86 : x
  2. Step 2: Convert to fraction form
    187,911.17/281,571.12 = 145,320.86/x
  3. Step 3: Cross multiply
    187,911.17x = 281,571.12 × 145,320.86
  4. Step 4: Simplify right side
    187,911.17x = 40,918,157,309.56
  5. Step 5: Solve for x
    x = 40,918,157,309.56/187,911.17
  6. Step 6: Final answer
    x = 217,752.66

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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.