Home / 139,730.34-192,821.82-76,068.36

Finding the Fourth Proportional to 139,730.34, 192,821.82 and 76,068.36

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Solution

The fourth proportional to 139,730.34, 192,821.82 and 76,068.36 is: 104,971.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,730.34 : 192,821.82 = 76,068.36 : x
  2. Step 2: Convert to fraction form
    139,730.34/192,821.82 = 76,068.36/x
  3. Step 3: Cross multiply
    139,730.34x = 192,821.82 × 76,068.36
  4. Step 4: Simplify right side
    139,730.34x = 14,667,639,619.62
  5. Step 5: Solve for x
    x = 14,667,639,619.62/139,730.34
  6. Step 6: Final answer
    x = 104,971.04

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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.