Home / 272,728.62-409,136.21-83,145.56

Finding the Fourth Proportional to 272,728.62, 409,136.21 and 83,145.56

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Solution

The fourth proportional to 272,728.62, 409,136.21 and 83,145.56 is: 124,731.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,728.62 : 409,136.21 = 83,145.56 : x
  2. Step 2: Convert to fraction form
    272,728.62/409,136.21 = 83,145.56/x
  3. Step 3: Cross multiply
    272,728.62x = 409,136.21 × 83,145.56
  4. Step 4: Simplify right side
    272,728.62x = 34,017,861,066.90
  5. Step 5: Solve for x
    x = 34,017,861,066.90/272,728.62
  6. Step 6: Final answer
    x = 124,731.54

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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.