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Finding the Fourth Proportional to 126,641.56, 174,722.91 and 72,925.42

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Solution

The fourth proportional to 126,641.56, 174,722.91 and 72,925.42 is: 100,612.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,641.56 : 174,722.91 = 72,925.42 : x
  2. Step 2: Convert to fraction form
    126,641.56/174,722.91 = 72,925.42/x
  3. Step 3: Cross multiply
    126,641.56x = 174,722.91 × 72,925.42
  4. Step 4: Simplify right side
    126,641.56x = 12,741,741,595.37
  5. Step 5: Solve for x
    x = 12,741,741,595.37/126,641.56
  6. Step 6: Final answer
    x = 100,612.64

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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.