Home / 207,990.42-311,985.64-67,749.04

Finding the Fourth Proportional to 207,990.42, 311,985.64 and 67,749.04

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Solution

The fourth proportional to 207,990.42, 311,985.64 and 67,749.04 is: 101,623.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,990.42 : 311,985.64 = 67,749.04 : x
  2. Step 2: Convert to fraction form
    207,990.42/311,985.64 = 67,749.04/x
  3. Step 3: Cross multiply
    207,990.42x = 311,985.64 × 67,749.04
  4. Step 4: Simplify right side
    207,990.42x = 21,136,727,603.79
  5. Step 5: Solve for x
    x = 21,136,727,603.79/207,990.42
  6. Step 6: Final answer
    x = 101,623.56

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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.