Home / 208,935.20-313,607.60-103,872.80

Finding the Fourth Proportional to 208,935.20, 313,607.60 and 103,872.80

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Solution

The fourth proportional to 208,935.20, 313,607.60 and 103,872.80 is: 155,911.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,935.20 : 313,607.60 = 103,872.80 : x
  2. Step 2: Convert to fraction form
    208,935.20/313,607.60 = 103,872.80/x
  3. Step 3: Cross multiply
    208,935.20x = 313,607.60 × 103,872.80
  4. Step 4: Simplify right side
    208,935.20x = 32,575,299,513.28
  5. Step 5: Solve for x
    x = 32,575,299,513.28/208,935.20
  6. Step 6: Final answer
    x = 155,911.02

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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.