Home / 129,532,786.80-178,754,942.16-73,778,196.48

Finding the Fourth Proportional to 129,532,786.80, 178,754,942.16 and 73,778,196.48

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Solution

The fourth proportional to 129,532,786.80, 178,754,942.16 and 73,778,196.48 is: 101,813,738.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,532,786.80 : 178,754,942.16 = 73,778,196.48 : x
  2. Step 2: Convert to fraction form
    129,532,786.80/178,754,942.16 = 73,778,196.48/x
  3. Step 3: Cross multiply
    129,532,786.80x = 178,754,942.16 × 73,778,196.48
  4. Step 4: Simplify right side
    129,532,786.80x = 13,188,217,244,451,516
  5. Step 5: Solve for x
    x = 13,188,217,244,451,516/129,532,786.80
  6. Step 6: Final answer
    x = 101,813,738.21

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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.