Home / 139,120.17-191,986.92-75,457.95

Finding the Fourth Proportional to 139,120.17, 191,986.92 and 75,457.95

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Solution

The fourth proportional to 139,120.17, 191,986.92 and 75,457.95 is: 104,132.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,120.17 : 191,986.92 = 75,457.95 : x
  2. Step 2: Convert to fraction form
    139,120.17/191,986.92 = 75,457.95/x
  3. Step 3: Cross multiply
    139,120.17x = 191,986.92 × 75,457.95
  4. Step 4: Simplify right side
    139,120.17x = 14,486,939,410.01
  5. Step 5: Solve for x
    x = 14,486,939,410.01/139,120.17
  6. Step 6: Final answer
    x = 104,132.56

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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.