Home / 208,836.40-313,254.60-68,609.20

Finding the Fourth Proportional to 208,836.40, 313,254.60 and 68,609.20

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Solution

The fourth proportional to 208,836.40, 313,254.60 and 68,609.20 is: 102,913.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,836.40 : 313,254.60 = 68,609.20 : x
  2. Step 2: Convert to fraction form
    208,836.40/313,254.60 = 68,609.20/x
  3. Step 3: Cross multiply
    208,836.40x = 313,254.60 × 68,609.20
  4. Step 4: Simplify right side
    208,836.40x = 21,492,147,502.32
  5. Step 5: Solve for x
    x = 21,492,147,502.32/208,836.40
  6. Step 6: Final answer
    x = 102,913.80

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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.