Home / 129,821.70-194,787.23-70,699.80

Finding the Fourth Proportional to 129,821.70, 194,787.23 and 70,699.80

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Solution

The fourth proportional to 129,821.70, 194,787.23 and 70,699.80 is: 106,079.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,821.70 : 194,787.23 = 70,699.80 : x
  2. Step 2: Convert to fraction form
    129,821.70/194,787.23 = 70,699.80/x
  3. Step 3: Cross multiply
    129,821.70x = 194,787.23 × 70,699.80
  4. Step 4: Simplify right side
    129,821.70x = 13,771,418,203.55
  5. Step 5: Solve for x
    x = 13,771,418,203.55/129,821.70
  6. Step 6: Final answer
    x = 106,079.48

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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.