Home / 138,741.35-191,464.43-75,080.51

Finding the Fourth Proportional to 138,741.35, 191,464.43 and 75,080.51

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Solution

The fourth proportional to 138,741.35, 191,464.43 and 75,080.51 is: 103,611.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,741.35 : 191,464.43 = 75,080.51 : x
  2. Step 2: Convert to fraction form
    138,741.35/191,464.43 = 75,080.51/x
  3. Step 3: Cross multiply
    138,741.35x = 191,464.43 × 75,080.51
  4. Step 4: Simplify right side
    138,741.35x = 14,375,247,717.62
  5. Step 5: Solve for x
    x = 14,375,247,717.62/138,741.35
  6. Step 6: Final answer
    x = 103,611.85

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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.