Home / 212,644.28-318,998.76-72,370.10

Finding the Fourth Proportional to 212,644.28, 318,998.76 and 72,370.10

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Solution

The fourth proportional to 212,644.28, 318,998.76 and 72,370.10 is: 108,566.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,644.28 : 318,998.76 = 72,370.10 : x
  2. Step 2: Convert to fraction form
    212,644.28/318,998.76 = 72,370.10/x
  3. Step 3: Cross multiply
    212,644.28x = 318,998.76 × 72,370.10
  4. Step 4: Simplify right side
    212,644.28x = 23,085,972,161.08
  5. Step 5: Solve for x
    x = 23,085,972,161.08/212,644.28
  6. Step 6: Final answer
    x = 108,566.16

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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.