Home / 187,015,721.46-280,597,983.93-71,969,373.78

Finding the Fourth Proportional to 187,015,721.46, 280,597,983.93 and 71,969,373.78

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Solution

The fourth proportional to 187,015,721.46, 280,597,983.93 and 71,969,373.78 is: 107,982,692.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,015,721.46 : 280,597,983.93 = 71,969,373.78 : x
  2. Step 2: Convert to fraction form
    187,015,721.46/280,597,983.93 = 71,969,373.78/x
  3. Step 3: Cross multiply
    187,015,721.46x = 280,597,983.93 × 71,969,373.78
  4. Step 4: Simplify right side
    187,015,721.46x = 20,194,461,187,372,604
  5. Step 5: Solve for x
    x = 20,194,461,187,372,604/187,015,721.46
  6. Step 6: Final answer
    x = 107,982,692.74

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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.