Home / 208,531.44-312,563.88-90,025.20

Finding the Fourth Proportional to 208,531.44, 312,563.88 and 90,025.20

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Solution

The fourth proportional to 208,531.44, 312,563.88 and 90,025.20 is: 134,937.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,531.44 : 312,563.88 = 90,025.20 : x
  2. Step 2: Convert to fraction form
    208,531.44/312,563.88 = 90,025.20/x
  3. Step 3: Cross multiply
    208,531.44x = 312,563.88 × 90,025.20
  4. Step 4: Simplify right side
    208,531.44x = 28,138,625,809.78
  5. Step 5: Solve for x
    x = 28,138,625,809.78/208,531.44
  6. Step 6: Final answer
    x = 134,937.09

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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.