Home / 102,128.14-140,936.82-57,416.14

Finding the Fourth Proportional to 102,128.14, 140,936.82 and 57,416.14

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Solution

The fourth proportional to 102,128.14, 140,936.82 and 57,416.14 is: 79,234.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,128.14 : 140,936.82 = 57,416.14 : x
  2. Step 2: Convert to fraction form
    102,128.14/140,936.82 = 57,416.14/x
  3. Step 3: Cross multiply
    102,128.14x = 140,936.82 × 57,416.14
  4. Step 4: Simplify right side
    102,128.14x = 8,092,048,188.27
  5. Step 5: Solve for x
    x = 8,092,048,188.27/102,128.14
  6. Step 6: Final answer
    x = 79,234.27

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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.