Home / 126,890.57-175,029.71-81,627.50

Finding the Fourth Proportional to 126,890.57, 175,029.71 and 81,627.50

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Solution

The fourth proportional to 126,890.57, 175,029.71 and 81,627.50 is: 112,594.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,890.57 : 175,029.71 = 81,627.50 : x
  2. Step 2: Convert to fraction form
    126,890.57/175,029.71 = 81,627.50/x
  3. Step 3: Cross multiply
    126,890.57x = 175,029.71 × 81,627.50
  4. Step 4: Simplify right side
    126,890.57x = 14,287,236,369.74
  5. Step 5: Solve for x
    x = 14,287,236,369.74/126,890.57
  6. Step 6: Final answer
    x = 112,594.95

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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.