Home / 129,908.67-179,262.07-76,183.80

Finding the Fourth Proportional to 129,908.67, 179,262.07 and 76,183.80

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Solution

The fourth proportional to 129,908.67, 179,262.07 and 76,183.80 is: 105,126.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,908.67 : 179,262.07 = 76,183.80 : x
  2. Step 2: Convert to fraction form
    129,908.67/179,262.07 = 76,183.80/x
  3. Step 3: Cross multiply
    129,908.67x = 179,262.07 × 76,183.80
  4. Step 4: Simplify right side
    129,908.67x = 13,656,865,688.47
  5. Step 5: Solve for x
    x = 13,656,865,688.47/129,908.67
  6. Step 6: Final answer
    x = 105,126.67

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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.