Home / 139,301.03-192,236.15-75,638.81

Finding the Fourth Proportional to 139,301.03, 192,236.15 and 75,638.81

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Solution

The fourth proportional to 139,301.03, 192,236.15 and 75,638.81 is: 104,381.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,301.03 : 192,236.15 = 75,638.81 : x
  2. Step 2: Convert to fraction form
    139,301.03/192,236.15 = 75,638.81/x
  3. Step 3: Cross multiply
    139,301.03x = 192,236.15 × 75,638.81
  4. Step 4: Simplify right side
    139,301.03x = 14,540,513,624.98
  5. Step 5: Solve for x
    x = 14,540,513,624.98/139,301.03
  6. Step 6: Final answer
    x = 104,381.95

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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.