Home / 129,789.63-179,109.68-70,173.63

Finding the Fourth Proportional to 129,789.63, 179,109.68 and 70,173.63

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Solution

The fourth proportional to 129,789.63, 179,109.68 and 70,173.63 is: 96,839.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,789.63 : 179,109.68 = 70,173.63 : x
  2. Step 2: Convert to fraction form
    129,789.63/179,109.68 = 70,173.63/x
  3. Step 3: Cross multiply
    129,789.63x = 179,109.68 × 70,173.63
  4. Step 4: Simplify right side
    129,789.63x = 12,568,775,693.62
  5. Step 5: Solve for x
    x = 12,568,775,693.62/129,789.63
  6. Step 6: Final answer
    x = 96,839.60

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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.