Home / 126,891.07-175,030.39-81,628

Finding the Fourth Proportional to 126,891.07, 175,030.39 and 81,628

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Solution

The fourth proportional to 126,891.07, 175,030.39 and 81,628 is: 112,595.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,891.07 : 175,030.39 = 81,628 : x
  2. Step 2: Convert to fraction form
    126,891.07/175,030.39 = 81,628/x
  3. Step 3: Cross multiply
    126,891.07x = 175,030.39 × 81,628
  4. Step 4: Simplify right side
    126,891.07x = 14,287,380,674.92
  5. Step 5: Solve for x
    x = 14,287,380,674.92/126,891.07
  6. Step 6: Final answer
    x = 112,595.64

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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.