Home / 212,675.10-318,619.05-123,971.10

Finding the Fourth Proportional to 212,675.10, 318,619.05 and 123,971.10

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Solution

The fourth proportional to 212,675.10, 318,619.05 and 123,971.10 is: 185,727.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,675.10 : 318,619.05 = 123,971.10 : x
  2. Step 2: Convert to fraction form
    212,675.10/318,619.05 = 123,971.10/x
  3. Step 3: Cross multiply
    212,675.10x = 318,619.05 × 123,971.10
  4. Step 4: Simplify right side
    212,675.10x = 39,499,554,109.46
  5. Step 5: Solve for x
    x = 39,499,554,109.46/212,675.10
  6. Step 6: Final answer
    x = 185,727.22

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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.