Home / 129,878.27-194,828.51-45,631.11

Finding the Fourth Proportional to 129,878.27, 194,828.51 and 45,631.11

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Solution

The fourth proportional to 129,878.27, 194,828.51 and 45,631.11 is: 68,450.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,878.27 : 194,828.51 = 45,631.11 : x
  2. Step 2: Convert to fraction form
    129,878.27/194,828.51 = 45,631.11/x
  3. Step 3: Cross multiply
    129,878.27x = 194,828.51 × 45,631.11
  4. Step 4: Simplify right side
    129,878.27x = 8,890,241,170.95
  5. Step 5: Solve for x
    x = 8,890,241,170.95/129,878.27
  6. Step 6: Final answer
    x = 68,450.57

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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.