Home / 139,803.43-192,930.93-76,141.18

Finding the Fourth Proportional to 139,803.43, 192,930.93 and 76,141.18

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Solution

The fourth proportional to 139,803.43, 192,930.93 and 76,141.18 is: 105,076.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,803.43 : 192,930.93 = 76,141.18 : x
  2. Step 2: Convert to fraction form
    139,803.43/192,930.93 = 76,141.18/x
  3. Step 3: Cross multiply
    139,803.43x = 192,930.93 × 76,141.18
  4. Step 4: Simplify right side
    139,803.43x = 14,689,988,668.70
  5. Step 5: Solve for x
    x = 14,689,988,668.70/139,803.43
  6. Step 6: Final answer
    x = 105,076.02

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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.