Home / 140,135.92-193,391.67-76,477.81

Finding the Fourth Proportional to 140,135.92, 193,391.67 and 76,477.81

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Solution

The fourth proportional to 140,135.92, 193,391.67 and 76,477.81 is: 105,541.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,135.92 : 193,391.67 = 76,477.81 : x
  2. Step 2: Convert to fraction form
    140,135.92/193,391.67 = 76,477.81/x
  3. Step 3: Cross multiply
    140,135.92x = 193,391.67 × 76,477.81
  4. Step 4: Simplify right side
    140,135.92x = 14,790,171,197.16
  5. Step 5: Solve for x
    x = 14,790,171,197.16/140,135.92
  6. Step 6: Final answer
    x = 105,541.62

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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.