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Finding the Fourth Proportional to 102,079.40, 140,884.90 and 73,493.68

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Solution

The fourth proportional to 102,079.40, 140,884.90 and 73,493.68 is: 101,432.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,079.40 : 140,884.90 = 73,493.68 : x
  2. Step 2: Convert to fraction form
    102,079.40/140,884.90 = 73,493.68/x
  3. Step 3: Cross multiply
    102,079.40x = 140,884.90 × 73,493.68
  4. Step 4: Simplify right side
    102,079.40x = 10,354,149,757.43
  5. Step 5: Solve for x
    x = 10,354,149,757.43/102,079.40
  6. Step 6: Final answer
    x = 101,432.31

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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.