Home / 138,743.06-191,465.96-75,080.88

Finding the Fourth Proportional to 138,743.06, 191,465.96 and 75,080.88

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Solution

The fourth proportional to 138,743.06, 191,465.96 and 75,080.88 is: 103,611.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,743.06 : 191,465.96 = 75,080.88 : x
  2. Step 2: Convert to fraction form
    138,743.06/191,465.96 = 75,080.88/x
  3. Step 3: Cross multiply
    138,743.06x = 191,465.96 × 75,080.88
  4. Step 4: Simplify right side
    138,743.06x = 14,375,432,391.44
  5. Step 5: Solve for x
    x = 14,375,432,391.44/138,743.06
  6. Step 6: Final answer
    x = 103,611.91

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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.