Home / 138,837.80-191,595.82-75,175.60

Finding the Fourth Proportional to 138,837.80, 191,595.82 and 75,175.60

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Solution

The fourth proportional to 138,837.80, 191,595.82 and 75,175.60 is: 103,742.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,837.80 : 191,595.82 = 75,175.60 : x
  2. Step 2: Convert to fraction form
    138,837.80/191,595.82 = 75,175.60/x
  3. Step 3: Cross multiply
    138,837.80x = 191,595.82 × 75,175.60
  4. Step 4: Simplify right side
    138,837.80x = 14,403,330,725.99
  5. Step 5: Solve for x
    x = 14,403,330,725.99/138,837.80
  6. Step 6: Final answer
    x = 103,742.14

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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.