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Finding the Fourth Proportional to 126,472.80, 174,516.48 and 69,884.40

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Solution

The fourth proportional to 126,472.80, 174,516.48 and 69,884.40 is: 96,431.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,472.80 : 174,516.48 = 69,884.40 : x
  2. Step 2: Convert to fraction form
    126,472.80/174,516.48 = 69,884.40/x
  3. Step 3: Cross multiply
    126,472.80x = 174,516.48 × 69,884.40
  4. Step 4: Simplify right side
    126,472.80x = 12,195,979,494.91
  5. Step 5: Solve for x
    x = 12,195,979,494.91/126,472.80
  6. Step 6: Final answer
    x = 96,431.64

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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.