Home / 126,947.70-175,108.16-81,684.50

Finding the Fourth Proportional to 126,947.70, 175,108.16 and 81,684.50

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Solution

The fourth proportional to 126,947.70, 175,108.16 and 81,684.50 is: 112,673.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,947.70 : 175,108.16 = 81,684.50 : x
  2. Step 2: Convert to fraction form
    126,947.70/175,108.16 = 81,684.50/x
  3. Step 3: Cross multiply
    126,947.70x = 175,108.16 × 81,684.50
  4. Step 4: Simplify right side
    126,947.70x = 14,303,621,824.19
  5. Step 5: Solve for x
    x = 14,303,621,824.19/126,947.70
  6. Step 6: Final answer
    x = 112,673.34

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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.