Home / 138,808.89-191,556.33-75,146.69

Finding the Fourth Proportional to 138,808.89, 191,556.33 and 75,146.69

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Solution

The fourth proportional to 138,808.89, 191,556.33 and 75,146.69 is: 103,702.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,808.89 : 191,556.33 = 75,146.69 : x
  2. Step 2: Convert to fraction form
    138,808.89/191,556.33 = 75,146.69/x
  3. Step 3: Cross multiply
    138,808.89x = 191,556.33 × 75,146.69
  4. Step 4: Simplify right side
    138,808.89x = 14,394,823,190.27
  5. Step 5: Solve for x
    x = 14,394,823,190.27/138,808.89
  6. Step 6: Final answer
    x = 103,702.46

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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.