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Finding the Fourth Proportional to 118,676.10, 178,015.92 and 38,713.68

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Solution

The fourth proportional to 118,676.10, 178,015.92 and 38,713.68 is: 58,071.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,676.10 : 178,015.92 = 38,713.68 : x
  2. Step 2: Convert to fraction form
    118,676.10/178,015.92 = 38,713.68/x
  3. Step 3: Cross multiply
    118,676.10x = 178,015.92 × 38,713.68
  4. Step 4: Simplify right side
    118,676.10x = 6,891,651,361.79
  5. Step 5: Solve for x
    x = 6,891,651,361.79/118,676.10
  6. Step 6: Final answer
    x = 58,071.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.