Home / 212,387.10-318,402.08-142,051.74

Finding the Fourth Proportional to 212,387.10, 318,402.08 and 142,051.74

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Solution

The fourth proportional to 212,387.10, 318,402.08 and 142,051.74 is: 212,958.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,387.10 : 318,402.08 = 142,051.74 : x
  2. Step 2: Convert to fraction form
    212,387.10/318,402.08 = 142,051.74/x
  3. Step 3: Cross multiply
    212,387.10x = 318,402.08 × 142,051.74
  4. Step 4: Simplify right side
    212,387.10x = 45,229,568,246.74
  5. Step 5: Solve for x
    x = 45,229,568,246.74/212,387.10
  6. Step 6: Final answer
    x = 212,958.18

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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.