Home / 131,178.36-196,913.22-67,981.56

Finding the Fourth Proportional to 131,178.36, 196,913.22 and 67,981.56

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Solution

The fourth proportional to 131,178.36, 196,913.22 and 67,981.56 is: 102,047.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,178.36 : 196,913.22 = 67,981.56 : x
  2. Step 2: Convert to fraction form
    131,178.36/196,913.22 = 67,981.56/x
  3. Step 3: Cross multiply
    131,178.36x = 196,913.22 × 67,981.56
  4. Step 4: Simplify right side
    131,178.36x = 13,386,467,880.22
  5. Step 5: Solve for x
    x = 13,386,467,880.22/131,178.36
  6. Step 6: Final answer
    x = 102,047.84

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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.