Home / 142,563.78-196,758.86-82,122.80

Finding the Fourth Proportional to 142,563.78, 196,758.86 and 82,122.80

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Solution

The fourth proportional to 142,563.78, 196,758.86 and 82,122.80 is: 113,341.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,563.78 : 196,758.86 = 82,122.80 : x
  2. Step 2: Convert to fraction form
    142,563.78/196,758.86 = 82,122.80/x
  3. Step 3: Cross multiply
    142,563.78x = 196,758.86 × 82,122.80
  4. Step 4: Simplify right side
    142,563.78x = 16,158,387,113.60
  5. Step 5: Solve for x
    x = 16,158,387,113.60/142,563.78
  6. Step 6: Final answer
    x = 113,341.46

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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.