Home / 139,039.12-191,874.18-75,376.90

Finding the Fourth Proportional to 139,039.12, 191,874.18 and 75,376.90

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Solution

The fourth proportional to 139,039.12, 191,874.18 and 75,376.90 is: 104,020.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,039.12 : 191,874.18 = 75,376.90 : x
  2. Step 2: Convert to fraction form
    139,039.12/191,874.18 = 75,376.90/x
  3. Step 3: Cross multiply
    139,039.12x = 191,874.18 × 75,376.90
  4. Step 4: Simplify right side
    139,039.12x = 14,462,880,878.44
  5. Step 5: Solve for x
    x = 14,462,880,878.44/139,039.12
  6. Step 6: Final answer
    x = 104,020.23

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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.