Home / 139,107.09-191,968.34-75,445.95

Finding the Fourth Proportional to 139,107.09, 191,968.34 and 75,445.95

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Solution

The fourth proportional to 139,107.09, 191,968.34 and 75,445.95 is: 104,115.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,107.09 : 191,968.34 = 75,445.95 : x
  2. Step 2: Convert to fraction form
    139,107.09/191,968.34 = 75,445.95/x
  3. Step 3: Cross multiply
    139,107.09x = 191,968.34 × 75,445.95
  4. Step 4: Simplify right side
    139,107.09x = 14,483,233,403.99
  5. Step 5: Solve for x
    x = 14,483,233,403.99/139,107.09
  6. Step 6: Final answer
    x = 104,115.71

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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.