Home / 120,812.49-181,218.74-45,915.03

Finding the Fourth Proportional to 120,812.49, 181,218.74 and 45,915.03

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Solution

The fourth proportional to 120,812.49, 181,218.74 and 45,915.03 is: 68,872.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,812.49 : 181,218.74 = 45,915.03 : x
  2. Step 2: Convert to fraction form
    120,812.49/181,218.74 = 45,915.03/x
  3. Step 3: Cross multiply
    120,812.49x = 181,218.74 × 45,915.03
  4. Step 4: Simplify right side
    120,812.49x = 8,320,663,654.09
  5. Step 5: Solve for x
    x = 8,320,663,654.09/120,812.49
  6. Step 6: Final answer
    x = 68,872.55

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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.