Home / 139,531.91-209,278.15-44,749.78

Finding the Fourth Proportional to 139,531.91, 209,278.15 and 44,749.78

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Solution

The fourth proportional to 139,531.91, 209,278.15 and 44,749.78 is: 67,118.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,531.91 : 209,278.15 = 44,749.78 : x
  2. Step 2: Convert to fraction form
    139,531.91/209,278.15 = 44,749.78/x
  3. Step 3: Cross multiply
    139,531.91x = 209,278.15 × 44,749.78
  4. Step 4: Simplify right side
    139,531.91x = 9,365,150,124.92
  5. Step 5: Solve for x
    x = 9,365,150,124.92/139,531.91
  6. Step 6: Final answer
    x = 67,118.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.