Home / 139,965.57-193,153.82-76,304.63

Finding the Fourth Proportional to 139,965.57, 193,153.82 and 76,304.63

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Solution

The fourth proportional to 139,965.57, 193,153.82 and 76,304.63 is: 105,301.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,965.57 : 193,153.82 = 76,304.63 : x
  2. Step 2: Convert to fraction form
    139,965.57/193,153.82 = 76,304.63/x
  3. Step 3: Cross multiply
    139,965.57x = 193,153.82 × 76,304.63
  4. Step 4: Simplify right side
    139,965.57x = 14,738,530,869.55
  5. Step 5: Solve for x
    x = 14,738,530,869.55/139,965.57
  6. Step 6: Final answer
    x = 105,301.12

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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.