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Finding the Fourth Proportional to 139,004.44, 191,826.82 and 75,341.68

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Solution

The fourth proportional to 139,004.44, 191,826.82 and 75,341.68 is: 103,971.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,004.44 : 191,826.82 = 75,341.68 : x
  2. Step 2: Convert to fraction form
    139,004.44/191,826.82 = 75,341.68/x
  3. Step 3: Cross multiply
    139,004.44x = 191,826.82 × 75,341.68
  4. Step 4: Simplify right side
    139,004.44x = 14,452,554,887.86
  5. Step 5: Solve for x
    x = 14,452,554,887.86/139,004.44
  6. Step 6: Final answer
    x = 103,971.89

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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.