Home / 135,708.60-187,278.78-75,278.04

Finding the Fourth Proportional to 135,708.60, 187,278.78 and 75,278.04

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Solution

The fourth proportional to 135,708.60, 187,278.78 and 75,278.04 is: 103,884.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,708.60 : 187,278.78 = 75,278.04 : x
  2. Step 2: Convert to fraction form
    135,708.60/187,278.78 = 75,278.04/x
  3. Step 3: Cross multiply
    135,708.60x = 187,278.78 × 75,278.04
  4. Step 4: Simplify right side
    135,708.60x = 14,097,979,491.99
  5. Step 5: Solve for x
    x = 14,097,979,491.99/135,708.60
  6. Step 6: Final answer
    x = 103,884.20

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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.