Home / 187,389.46-281,065.96-103,121.92

Finding the Fourth Proportional to 187,389.46, 281,065.96 and 103,121.92

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Solution

The fourth proportional to 187,389.46, 281,065.96 and 103,121.92 is: 154,672.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,389.46 : 281,065.96 = 103,121.92 : x
  2. Step 2: Convert to fraction form
    187,389.46/281,065.96 = 103,121.92/x
  3. Step 3: Cross multiply
    187,389.46x = 281,065.96 × 103,121.92
  4. Step 4: Simplify right side
    187,389.46x = 28,984,061,441.84
  5. Step 5: Solve for x
    x = 28,984,061,441.84/187,389.46
  6. Step 6: Final answer
    x = 154,672.85

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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.