Home / 126,912.61-175,120.47-78,563.17

Finding the Fourth Proportional to 126,912.61, 175,120.47 and 78,563.17

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Solution

The fourth proportional to 126,912.61, 175,120.47 and 78,563.17 is: 108,405.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,912.61 : 175,120.47 = 78,563.17 : x
  2. Step 2: Convert to fraction form
    126,912.61/175,120.47 = 78,563.17/x
  3. Step 3: Cross multiply
    126,912.61x = 175,120.47 × 78,563.17
  4. Step 4: Simplify right side
    126,912.61x = 13,758,019,255.09
  5. Step 5: Solve for x
    x = 13,758,019,255.09/126,912.61
  6. Step 6: Final answer
    x = 108,405.46

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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.