Home / 138,743.08-191,465.46-75,080.88

Finding the Fourth Proportional to 138,743.08, 191,465.46 and 75,080.88

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Solution

The fourth proportional to 138,743.08, 191,465.46 and 75,080.88 is: 103,611.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,743.08 : 191,465.46 = 75,080.88 : x
  2. Step 2: Convert to fraction form
    138,743.08/191,465.46 = 75,080.88/x
  3. Step 3: Cross multiply
    138,743.08x = 191,465.46 × 75,080.88
  4. Step 4: Simplify right side
    138,743.08x = 14,375,395,226.40
  5. Step 5: Solve for x
    x = 14,375,395,226.40/138,743.08
  6. Step 6: Final answer
    x = 103,611.62

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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.