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Finding the Fourth Proportional to 134,903.44, 186,161.86 and 74,472.78

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Solution

The fourth proportional to 134,903.44, 186,161.86 and 74,472.78 is: 102,769.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,903.44 : 186,161.86 = 74,472.78 : x
  2. Step 2: Convert to fraction form
    134,903.44/186,161.86 = 74,472.78/x
  3. Step 3: Cross multiply
    134,903.44x = 186,161.86 × 74,472.78
  4. Step 4: Simplify right side
    134,903.44x = 13,863,991,523.39
  5. Step 5: Solve for x
    x = 13,863,991,523.39/134,903.44
  6. Step 6: Final answer
    x = 102,769.74

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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.