Home / 187,678.41-281,320.78-87,754.38

Finding the Fourth Proportional to 187,678.41, 281,320.78 and 87,754.38

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Solution

The fourth proportional to 187,678.41, 281,320.78 and 87,754.38 is: 131,539.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,678.41 : 281,320.78 = 87,754.38 : x
  2. Step 2: Convert to fraction form
    187,678.41/281,320.78 = 87,754.38/x
  3. Step 3: Cross multiply
    187,678.41x = 281,320.78 × 87,754.38
  4. Step 4: Simplify right side
    187,678.41x = 24,687,130,630.02
  5. Step 5: Solve for x
    x = 24,687,130,630.02/187,678.41
  6. Step 6: Final answer
    x = 131,539.53

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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.