Home / 197,140.46-271,959-129,128

Finding the Fourth Proportional to 197,140.46, 271,959 and 129,128

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Solution

The fourth proportional to 197,140.46, 271,959 and 129,128 is: 178,134.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,140.46 : 271,959 = 129,128 : x
  2. Step 2: Convert to fraction form
    197,140.46/271,959 = 129,128/x
  3. Step 3: Cross multiply
    197,140.46x = 271,959 × 129,128
  4. Step 4: Simplify right side
    197,140.46x = 35,117,521,752
  5. Step 5: Solve for x
    x = 35,117,521,752/197,140.46
  6. Step 6: Final answer
    x = 178,134.52

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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.