Home / 212,031.12-318,047.08-52,107.14

Finding the Fourth Proportional to 212,031.12, 318,047.08 and 52,107.14

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Solution

The fourth proportional to 212,031.12, 318,047.08 and 52,107.14 is: 78,160.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,031.12 : 318,047.08 = 52,107.14 : x
  2. Step 2: Convert to fraction form
    212,031.12/318,047.08 = 52,107.14/x
  3. Step 3: Cross multiply
    212,031.12x = 318,047.08 × 52,107.14
  4. Step 4: Simplify right side
    212,031.12x = 16,572,523,724.15
  5. Step 5: Solve for x
    x = 16,572,523,724.15/212,031.12
  6. Step 6: Final answer
    x = 78,160.81

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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.