Home / 129,916.14-179,243.46-76,203.42

Finding the Fourth Proportional to 129,916.14, 179,243.46 and 76,203.42

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Solution

The fourth proportional to 129,916.14, 179,243.46 and 76,203.42 is: 105,136.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,916.14 : 179,243.46 = 76,203.42 : x
  2. Step 2: Convert to fraction form
    129,916.14/179,243.46 = 76,203.42/x
  3. Step 3: Cross multiply
    129,916.14x = 179,243.46 × 76,203.42
  4. Step 4: Simplify right side
    129,916.14x = 13,658,964,664.63
  5. Step 5: Solve for x
    x = 13,658,964,664.63/129,916.14
  6. Step 6: Final answer
    x = 105,136.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.