Home / 139,128.66-191,996.19-75,465.54

Finding the Fourth Proportional to 139,128.66, 191,996.19 and 75,465.54

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Solution

The fourth proportional to 139,128.66, 191,996.19 and 75,465.54 is: 104,141.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,128.66 : 191,996.19 = 75,465.54 : x
  2. Step 2: Convert to fraction form
    139,128.66/191,996.19 = 75,465.54/x
  3. Step 3: Cross multiply
    139,128.66x = 191,996.19 × 75,465.54
  4. Step 4: Simplify right side
    139,128.66x = 14,489,096,156.29
  5. Step 5: Solve for x
    x = 14,489,096,156.29/139,128.66
  6. Step 6: Final answer
    x = 104,141.71

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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.