Home / 207,981.70-311,972.55-113,503.30

Finding the Fourth Proportional to 207,981.70, 311,972.55 and 113,503.30

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Solution

The fourth proportional to 207,981.70, 311,972.55 and 113,503.30 is: 170,254.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,981.70 : 311,972.55 = 113,503.30 : x
  2. Step 2: Convert to fraction form
    207,981.70/311,972.55 = 113,503.30/x
  3. Step 3: Cross multiply
    207,981.70x = 311,972.55 × 113,503.30
  4. Step 4: Simplify right side
    207,981.70x = 35,409,913,934.42
  5. Step 5: Solve for x
    x = 35,409,913,934.42/207,981.70
  6. Step 6: Final answer
    x = 170,254.95

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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.