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Finding the Fourth Proportional to 126,728.21, 174,923.88 and 73,049.11

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Solution

The fourth proportional to 126,728.21, 174,923.88 and 73,049.11 is: 100,830.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,728.21 : 174,923.88 = 73,049.11 : x
  2. Step 2: Convert to fraction form
    126,728.21/174,923.88 = 73,049.11/x
  3. Step 3: Cross multiply
    126,728.21x = 174,923.88 × 73,049.11
  4. Step 4: Simplify right side
    126,728.21x = 12,778,033,751.75
  5. Step 5: Solve for x
    x = 12,778,033,751.75/126,728.21
  6. Step 6: Final answer
    x = 100,830.22

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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.