Home / 129,759.32-179,064.98-73,172.68

Finding the Fourth Proportional to 129,759.32, 179,064.98 and 73,172.68

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Solution

The fourth proportional to 129,759.32, 179,064.98 and 73,172.68 is: 100,976.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,759.32 : 179,064.98 = 73,172.68 : x
  2. Step 2: Convert to fraction form
    129,759.32/179,064.98 = 73,172.68/x
  3. Step 3: Cross multiply
    129,759.32x = 179,064.98 × 73,172.68
  4. Step 4: Simplify right side
    129,759.32x = 13,102,664,480.75
  5. Step 5: Solve for x
    x = 13,102,664,480.75/129,759.32
  6. Step 6: Final answer
    x = 100,976.67

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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.