Home / 139,900.89-193,063.26-76,238.70

Finding the Fourth Proportional to 139,900.89, 193,063.26 and 76,238.70

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Solution

The fourth proportional to 139,900.89, 193,063.26 and 76,238.70 is: 105,209.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,900.89 : 193,063.26 = 76,238.70 : x
  2. Step 2: Convert to fraction form
    139,900.89/193,063.26 = 76,238.70/x
  3. Step 3: Cross multiply
    139,900.89x = 193,063.26 × 76,238.70
  4. Step 4: Simplify right side
    139,900.89x = 14,718,891,960.16
  5. Step 5: Solve for x
    x = 14,718,891,960.16/139,900.89
  6. Step 6: Final answer
    x = 105,209.42

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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.