Home / 212,144.51-318,006.55-99,623.30

Finding the Fourth Proportional to 212,144.51, 318,006.55 and 99,623.30

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Solution

The fourth proportional to 212,144.51, 318,006.55 and 99,623.30 is: 149,336.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,144.51 : 318,006.55 = 99,623.30 : x
  2. Step 2: Convert to fraction form
    212,144.51/318,006.55 = 99,623.30/x
  3. Step 3: Cross multiply
    212,144.51x = 318,006.55 × 99,623.30
  4. Step 4: Simplify right side
    212,144.51x = 31,680,861,932.62
  5. Step 5: Solve for x
    x = 31,680,861,932.62/212,144.51
  6. Step 6: Final answer
    x = 149,336.23

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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.