Home / 142,316.34-196,391.07-81,906.39

Finding the Fourth Proportional to 142,316.34, 196,391.07 and 81,906.39

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Solution

The fourth proportional to 142,316.34, 196,391.07 and 81,906.39 is: 113,027.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,316.34 : 196,391.07 = 81,906.39 : x
  2. Step 2: Convert to fraction form
    142,316.34/196,391.07 = 81,906.39/x
  3. Step 3: Cross multiply
    142,316.34x = 196,391.07 × 81,906.39
  4. Step 4: Simplify right side
    142,316.34x = 16,085,683,571.94
  5. Step 5: Solve for x
    x = 16,085,683,571.94/142,316.34
  6. Step 6: Final answer
    x = 113,027.66

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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.