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Finding the Fourth Proportional to 126,803.56, 174,986.77 and 70,213.72

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Solution

The fourth proportional to 126,803.56, 174,986.77 and 70,213.72 is: 96,893.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,803.56 : 174,986.77 = 70,213.72 : x
  2. Step 2: Convert to fraction form
    126,803.56/174,986.77 = 70,213.72/x
  3. Step 3: Cross multiply
    126,803.56x = 174,986.77 × 70,213.72
  4. Step 4: Simplify right side
    126,803.56x = 12,286,472,072.48
  5. Step 5: Solve for x
    x = 12,286,472,072.48/126,803.56
  6. Step 6: Final answer
    x = 96,893.75

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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.