Home / 131,541.84-196,932.60-81,470.34

Finding the Fourth Proportional to 131,541.84, 196,932.60 and 81,470.34

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Solution

The fourth proportional to 131,541.84, 196,932.60 and 81,470.34 is: 121,970.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,541.84 : 196,932.60 = 81,470.34 : x
  2. Step 2: Convert to fraction form
    131,541.84/196,932.60 = 81,470.34/x
  3. Step 3: Cross multiply
    131,541.84x = 196,932.60 × 81,470.34
  4. Step 4: Simplify right side
    131,541.84x = 16,044,165,879.08
  5. Step 5: Solve for x
    x = 16,044,165,879.08/131,541.84
  6. Step 6: Final answer
    x = 121,970.06

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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.