Home / 212,333.13-318,548.90-72,091.75

Finding the Fourth Proportional to 212,333.13, 318,548.90 and 72,091.75

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Solution

The fourth proportional to 212,333.13, 318,548.90 and 72,091.75 is: 108,154.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,333.13 : 318,548.90 = 72,091.75 : x
  2. Step 2: Convert to fraction form
    212,333.13/318,548.90 = 72,091.75/x
  3. Step 3: Cross multiply
    212,333.13x = 318,548.90 × 72,091.75
  4. Step 4: Simplify right side
    212,333.13x = 22,964,747,661.58
  5. Step 5: Solve for x
    x = 22,964,747,661.58/212,333.13
  6. Step 6: Final answer
    x = 108,154.33

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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.