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Finding the Fourth Proportional to 126,857.25, 175,063.01 and 76,556.25

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Solution

The fourth proportional to 126,857.25, 175,063.01 and 76,556.25 is: 105,647.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,857.25 : 175,063.01 = 76,556.25 : x
  2. Step 2: Convert to fraction form
    126,857.25/175,063.01 = 76,556.25/x
  3. Step 3: Cross multiply
    126,857.25x = 175,063.01 × 76,556.25
  4. Step 4: Simplify right side
    126,857.25x = 13,402,167,176.53
  5. Step 5: Solve for x
    x = 13,402,167,176.53/126,857.25
  6. Step 6: Final answer
    x = 105,647.63

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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.