Home / 207,445.50-311,039.37-87,440.71

Finding the Fourth Proportional to 207,445.50, 311,039.37 and 87,440.71

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Solution

The fourth proportional to 207,445.50, 311,039.37 and 87,440.71 is: 131,106.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,445.50 : 311,039.37 = 87,440.71 : x
  2. Step 2: Convert to fraction form
    207,445.50/311,039.37 = 87,440.71/x
  3. Step 3: Cross multiply
    207,445.50x = 311,039.37 × 87,440.71
  4. Step 4: Simplify right side
    207,445.50x = 27,197,503,350.75
  5. Step 5: Solve for x
    x = 27,197,503,350.75/207,445.50
  6. Step 6: Final answer
    x = 131,106.74

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1.5x scale

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.