Home / 139,782.06-192,902.70-76,123.32

Finding the Fourth Proportional to 139,782.06, 192,902.70 and 76,123.32

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Solution

The fourth proportional to 139,782.06, 192,902.70 and 76,123.32 is: 105,052.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,782.06 : 192,902.70 = 76,123.32 : x
  2. Step 2: Convert to fraction form
    139,782.06/192,902.70 = 76,123.32/x
  3. Step 3: Cross multiply
    139,782.06x = 192,902.70 × 76,123.32
  4. Step 4: Simplify right side
    139,782.06x = 14,684,393,960.96
  5. Step 5: Solve for x
    x = 14,684,393,960.96/139,782.06
  6. Step 6: Final answer
    x = 105,052.06

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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.