Home / 139,686.27-192,771.15-76,028.19

Finding the Fourth Proportional to 139,686.27, 192,771.15 and 76,028.19

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Solution

The fourth proportional to 139,686.27, 192,771.15 and 76,028.19 is: 104,921.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,686.27 : 192,771.15 = 76,028.19 : x
  2. Step 2: Convert to fraction form
    139,686.27/192,771.15 = 76,028.19/x
  3. Step 3: Cross multiply
    139,686.27x = 192,771.15 × 76,028.19
  4. Step 4: Simplify right side
    139,686.27x = 14,656,041,618.72
  5. Step 5: Solve for x
    x = 14,656,041,618.72/139,686.27
  6. Step 6: Final answer
    x = 104,921.13

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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.