Home / 139,835.58-192,972.78-76,173.22

Finding the Fourth Proportional to 139,835.58, 192,972.78 and 76,173.22

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Solution

The fourth proportional to 139,835.58, 192,972.78 and 76,173.22 is: 105,118.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,835.58 : 192,972.78 = 76,173.22 : x
  2. Step 2: Convert to fraction form
    139,835.58/192,972.78 = 76,173.22/x
  3. Step 3: Cross multiply
    139,835.58x = 192,972.78 × 76,173.22
  4. Step 4: Simplify right side
    139,835.58x = 14,699,358,024.95
  5. Step 5: Solve for x
    x = 14,699,358,024.95/139,835.58
  6. Step 6: Final answer
    x = 105,118.87

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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.