Home / 70,131.29-105,196.95-17,540.78

Finding the Fourth Proportional to 70,131.29, 105,196.95 and 17,540.78

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Solution

The fourth proportional to 70,131.29, 105,196.95 and 17,540.78 is: 26,311.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,131.29 : 105,196.95 = 17,540.78 : x
  2. Step 2: Convert to fraction form
    70,131.29/105,196.95 = 17,540.78/x
  3. Step 3: Cross multiply
    70,131.29x = 105,196.95 × 17,540.78
  4. Step 4: Simplify right side
    70,131.29x = 1,845,236,556.62
  5. Step 5: Solve for x
    x = 1,845,236,556.62/70,131.29
  6. Step 6: Final answer
    x = 26,311.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.