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Finding the Fourth Proportional to 126,378.98, 174,401.90 and 69,789.14

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Solution

The fourth proportional to 126,378.98, 174,401.90 and 69,789.14 is: 96,308.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,378.98 : 174,401.90 = 69,789.14 : x
  2. Step 2: Convert to fraction form
    126,378.98/174,401.90 = 69,789.14/x
  3. Step 3: Cross multiply
    126,378.98x = 174,401.90 × 69,789.14
  4. Step 4: Simplify right side
    126,378.98x = 12,171,358,615.37
  5. Step 5: Solve for x
    x = 12,171,358,615.37/126,378.98
  6. Step 6: Final answer
    x = 96,308.41

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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.