Home / 126,213.52-174,176.80-81,579.28

Finding the Fourth Proportional to 126,213.52, 174,176.80 and 81,579.28

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Solution

The fourth proportional to 126,213.52, 174,176.80 and 81,579.28 is: 112,580.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,213.52 : 174,176.80 = 81,579.28 : x
  2. Step 2: Convert to fraction form
    126,213.52/174,176.80 = 81,579.28/x
  3. Step 3: Cross multiply
    126,213.52x = 174,176.80 × 81,579.28
  4. Step 4: Simplify right side
    126,213.52x = 14,209,217,936.70
  5. Step 5: Solve for x
    x = 14,209,217,936.70/126,213.52
  6. Step 6: Final answer
    x = 112,580.79

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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.