Home / 129,889.08-179,287.77-76,195.80

Finding the Fourth Proportional to 129,889.08, 179,287.77 and 76,195.80

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Solution

The fourth proportional to 129,889.08, 179,287.77 and 76,195.80 is: 105,174.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,889.08 : 179,287.77 = 76,195.80 : x
  2. Step 2: Convert to fraction form
    129,889.08/179,287.77 = 76,195.80/x
  3. Step 3: Cross multiply
    129,889.08x = 179,287.77 × 76,195.80
  4. Step 4: Simplify right side
    129,889.08x = 13,660,975,065.37
  5. Step 5: Solve for x
    x = 13,660,975,065.37/129,889.08
  6. Step 6: Final answer
    x = 105,174.16

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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.