Home / 129,136.80-193,674.36-54,258.36

Finding the Fourth Proportional to 129,136.80, 193,674.36 and 54,258.36

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Solution

The fourth proportional to 129,136.80, 193,674.36 and 54,258.36 is: 81,374.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,136.80 : 193,674.36 = 54,258.36 : x
  2. Step 2: Convert to fraction form
    129,136.80/193,674.36 = 54,258.36/x
  3. Step 3: Cross multiply
    129,136.80x = 193,674.36 × 54,258.36
  4. Step 4: Simplify right side
    129,136.80x = 10,508,453,147.65
  5. Step 5: Solve for x
    x = 10,508,453,147.65/129,136.80
  6. Step 6: Final answer
    x = 81,374.58

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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.