Home / 251,290.11-346,781.49-138,120.15

Finding the Fourth Proportional to 251,290.11, 346,781.49 and 138,120.15

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Solution

The fourth proportional to 251,290.11, 346,781.49 and 138,120.15 is: 190,606.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,290.11 : 346,781.49 = 138,120.15 : x
  2. Step 2: Convert to fraction form
    251,290.11/346,781.49 = 138,120.15/x
  3. Step 3: Cross multiply
    251,290.11x = 346,781.49 × 138,120.15
  4. Step 4: Simplify right side
    251,290.11x = 47,897,511,416.02
  5. Step 5: Solve for x
    x = 47,897,511,416.02/251,290.11
  6. Step 6: Final answer
    x = 190,606.43

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1.5x scale

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.