Home / 207,585,671.60-311,378,507.40-131,144,481.20

Finding the Fourth Proportional to 207,585,671.60, 311,378,507.40 and 131,144,481.20

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Solution

The fourth proportional to 207,585,671.60, 311,378,507.40 and 131,144,481.20 is: 196,716,721.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,585,671.60 : 311,378,507.40 = 131,144,481.20 : x
  2. Step 2: Convert to fraction form
    207,585,671.60/311,378,507.40 = 131,144,481.20/x
  3. Step 3: Cross multiply
    207,585,671.60x = 311,378,507.40 × 131,144,481.20
  4. Step 4: Simplify right side
    207,585,671.60x = 40,835,572,809,803,360
  5. Step 5: Solve for x
    x = 40,835,572,809,803,360/207,585,671.60
  6. Step 6: Final answer
    x = 196,716,721.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.