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Finding the Fourth Proportional to 126,991.71, 175,254.09 and 75,994.74

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Solution

The fourth proportional to 126,991.71, 175,254.09 and 75,994.74 is: 104,876.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,991.71 : 175,254.09 = 75,994.74 : x
  2. Step 2: Convert to fraction form
    126,991.71/175,254.09 = 75,994.74/x
  3. Step 3: Cross multiply
    126,991.71x = 175,254.09 × 75,994.74
  4. Step 4: Simplify right side
    126,991.71x = 13,318,389,003.49
  5. Step 5: Solve for x
    x = 13,318,389,003.49/126,991.71
  6. Step 6: Final answer
    x = 104,876.05

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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.