Home / 135,709.44-187,272-75,275.04

Finding the Fourth Proportional to 135,709.44, 187,272 and 75,275.04

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Solution

The fourth proportional to 135,709.44, 187,272 and 75,275.04 is: 103,875.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,709.44 : 187,272 = 75,275.04 : x
  2. Step 2: Convert to fraction form
    135,709.44/187,272 = 75,275.04/x
  3. Step 3: Cross multiply
    135,709.44x = 187,272 × 75,275.04
  4. Step 4: Simplify right side
    135,709.44x = 14,096,907,290.88
  5. Step 5: Solve for x
    x = 14,096,907,290.88/135,709.44
  6. Step 6: Final answer
    x = 103,875.66

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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.