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Finding the Fourth Proportional to 207,777.72, 311,718.42 and 83,115.48

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Solution

The fourth proportional to 207,777.72, 311,718.42 and 83,115.48 is: 124,693.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,777.72 : 311,718.42 = 83,115.48 : x
  2. Step 2: Convert to fraction form
    207,777.72/311,718.42 = 83,115.48/x
  3. Step 3: Cross multiply
    207,777.72x = 311,718.42 × 83,115.48
  4. Step 4: Simplify right side
    207,777.72x = 25,908,626,103.14
  5. Step 5: Solve for x
    x = 25,908,626,103.14/207,777.72
  6. Step 6: Final answer
    x = 124,693.96

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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.