Home / 205,880.60-308,936.10-87,531.80

Finding the Fourth Proportional to 205,880.60, 308,936.10 and 87,531.80

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Solution

The fourth proportional to 205,880.60, 308,936.10 and 87,531.80 is: 131,346.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,880.60 : 308,936.10 = 87,531.80 : x
  2. Step 2: Convert to fraction form
    205,880.60/308,936.10 = 87,531.80/x
  3. Step 3: Cross multiply
    205,880.60x = 308,936.10 × 87,531.80
  4. Step 4: Simplify right side
    205,880.60x = 27,041,732,917.98
  5. Step 5: Solve for x
    x = 27,041,732,917.98/205,880.60
  6. Step 6: Final answer
    x = 131,346.68

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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.