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Finding the Fourth Proportional to 207,161.46, 310,906.20 and 80,862.20

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Solution

The fourth proportional to 207,161.46, 310,906.20 and 80,862.20 is: 121,357.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,161.46 : 310,906.20 = 80,862.20 : x
  2. Step 2: Convert to fraction form
    207,161.46/310,906.20 = 80,862.20/x
  3. Step 3: Cross multiply
    207,161.46x = 310,906.20 × 80,862.20
  4. Step 4: Simplify right side
    207,161.46x = 25,140,559,325.64
  5. Step 5: Solve for x
    x = 25,140,559,325.64/207,161.46
  6. Step 6: Final answer
    x = 121,357.32

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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.