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Finding the Fourth Proportional to 126,015.74, 173,903.75 and 68,657.79

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Solution

The fourth proportional to 126,015.74, 173,903.75 and 68,657.79 is: 94,748.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,015.74 : 173,903.75 = 68,657.79 : x
  2. Step 2: Convert to fraction form
    126,015.74/173,903.75 = 68,657.79/x
  3. Step 3: Cross multiply
    126,015.74x = 173,903.75 × 68,657.79
  4. Step 4: Simplify right side
    126,015.74x = 11,939,847,319.36
  5. Step 5: Solve for x
    x = 11,939,847,319.36/126,015.74
  6. Step 6: Final answer
    x = 94,748.86

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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.