Home / 139,236.24-192,146.21-75,574.05

Finding the Fourth Proportional to 139,236.24, 192,146.21 and 75,574.05

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Solution

The fourth proportional to 139,236.24, 192,146.21 and 75,574.05 is: 104,292.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,236.24 : 192,146.21 = 75,574.05 : x
  2. Step 2: Convert to fraction form
    139,236.24/192,146.21 = 75,574.05/x
  3. Step 3: Cross multiply
    139,236.24x = 192,146.21 × 75,574.05
  4. Step 4: Simplify right side
    139,236.24x = 14,521,266,903.98
  5. Step 5: Solve for x
    x = 14,521,266,903.98/139,236.24
  6. Step 6: Final answer
    x = 104,292.29

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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.