Home / 102,015.21-140,781.09-56,697.44

Finding the Fourth Proportional to 102,015.21, 140,781.09 and 56,697.44

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Solution

The fourth proportional to 102,015.21, 140,781.09 and 56,697.44 is: 78,242.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,015.21 : 140,781.09 = 56,697.44 : x
  2. Step 2: Convert to fraction form
    102,015.21/140,781.09 = 56,697.44/x
  3. Step 3: Cross multiply
    102,015.21x = 140,781.09 × 56,697.44
  4. Step 4: Simplify right side
    102,015.21x = 7,981,926,593.20
  5. Step 5: Solve for x
    x = 7,981,926,593.20/102,015.21
  6. Step 6: Final answer
    x = 78,242.51

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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.