Home / 207,248,766.40-311,072,215.20-105,128,113.60

Finding the Fourth Proportional to 207,248,766.40, 311,072,215.20 and 105,128,113.60

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Solution

The fourth proportional to 207,248,766.40, 311,072,215.20 and 105,128,113.60 is: 157,793,147.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,248,766.40 : 311,072,215.20 = 105,128,113.60 : x
  2. Step 2: Convert to fraction form
    207,248,766.40/311,072,215.20 = 105,128,113.60/x
  3. Step 3: Cross multiply
    207,248,766.40x = 311,072,215.20 × 105,128,113.60
  4. Step 4: Simplify right side
    207,248,766.40x = 32,702,435,177,349,244
  5. Step 5: Solve for x
    x = 32,702,435,177,349,244/207,248,766.40
  6. Step 6: Final answer
    x = 157,793,147.56

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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.