Home / 131,957.49-197,905.88-78,664.52

Finding the Fourth Proportional to 131,957.49, 197,905.88 and 78,664.52

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Solution

The fourth proportional to 131,957.49, 197,905.88 and 78,664.52 is: 117,978.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,957.49 : 197,905.88 = 78,664.52 : x
  2. Step 2: Convert to fraction form
    131,957.49/197,905.88 = 78,664.52/x
  3. Step 3: Cross multiply
    131,957.49x = 197,905.88 × 78,664.52
  4. Step 4: Simplify right side
    131,957.49x = 15,568,171,055.38
  5. Step 5: Solve for x
    x = 15,568,171,055.38/131,957.49
  6. Step 6: Final answer
    x = 117,978.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.