Home / 197,142.46-271,961.76-129,130

Finding the Fourth Proportional to 197,142.46, 271,961.76 and 129,130

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Solution

The fourth proportional to 197,142.46, 271,961.76 and 129,130 is: 178,137.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,142.46 : 271,961.76 = 129,130 : x
  2. Step 2: Convert to fraction form
    197,142.46/271,961.76 = 129,130/x
  3. Step 3: Cross multiply
    197,142.46x = 271,961.76 × 129,130
  4. Step 4: Simplify right side
    197,142.46x = 35,118,422,068.80
  5. Step 5: Solve for x
    x = 35,118,422,068.80/197,142.46
  6. Step 6: Final answer
    x = 178,137.28

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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.