Home / 207,492.50-311,317.20-81,222.98

Finding the Fourth Proportional to 207,492.50, 311,317.20 and 81,222.98

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Solution

The fourth proportional to 207,492.50, 311,317.20 and 81,222.98 is: 121,865.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,492.50 : 311,317.20 = 81,222.98 : x
  2. Step 2: Convert to fraction form
    207,492.50/311,317.20 = 81,222.98/x
  3. Step 3: Cross multiply
    207,492.50x = 311,317.20 × 81,222.98
  4. Step 4: Simplify right side
    207,492.50x = 25,286,110,709.26
  5. Step 5: Solve for x
    x = 25,286,110,709.26/207,492.50
  6. Step 6: Final answer
    x = 121,865.18

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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.