Home / 135,639.04-187,179.94-75,209.80

Finding the Fourth Proportional to 135,639.04, 187,179.94 and 75,209.80

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Solution

The fourth proportional to 135,639.04, 187,179.94 and 75,209.80 is: 103,788.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,639.04 : 187,179.94 = 75,209.80 : x
  2. Step 2: Convert to fraction form
    135,639.04/187,179.94 = 75,209.80/x
  3. Step 3: Cross multiply
    135,639.04x = 187,179.94 × 75,209.80
  4. Step 4: Simplify right side
    135,639.04x = 14,077,765,851.41
  5. Step 5: Solve for x
    x = 14,077,765,851.41/135,639.04
  6. Step 6: Final answer
    x = 103,788.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.