Home / 139,782.54-192,902.11-76,120.29

Finding the Fourth Proportional to 139,782.54, 192,902.11 and 76,120.29

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Solution

The fourth proportional to 139,782.54, 192,902.11 and 76,120.29 is: 105,047.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,782.54 : 192,902.11 = 76,120.29 : x
  2. Step 2: Convert to fraction form
    139,782.54/192,902.11 = 76,120.29/x
  3. Step 3: Cross multiply
    139,782.54x = 192,902.11 × 76,120.29
  4. Step 4: Simplify right side
    139,782.54x = 14,683,764,364.51
  5. Step 5: Solve for x
    x = 14,683,764,364.51/139,782.54
  6. Step 6: Final answer
    x = 105,047.20

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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.