Home / 207,831.60-311,839.20-101,156.40

Finding the Fourth Proportional to 207,831.60, 311,839.20 and 101,156.40

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Solution

The fourth proportional to 207,831.60, 311,839.20 and 101,156.40 is: 151,779.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,831.60 : 311,839.20 = 101,156.40 : x
  2. Step 2: Convert to fraction form
    207,831.60/311,839.20 = 101,156.40/x
  3. Step 3: Cross multiply
    207,831.60x = 311,839.20 × 101,156.40
  4. Step 4: Simplify right side
    207,831.60x = 31,544,530,850.88
  5. Step 5: Solve for x
    x = 31,544,530,850.88/207,831.60
  6. Step 6: Final answer
    x = 151,779.28

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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.