Home / 139,639.79-192,699.11-75,976.22

Finding the Fourth Proportional to 139,639.79, 192,699.11 and 75,976.22

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Solution

The fourth proportional to 139,639.79, 192,699.11 and 75,976.22 is: 104,845.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,639.79 : 192,699.11 = 75,976.22 : x
  2. Step 2: Convert to fraction form
    139,639.79/192,699.11 = 75,976.22/x
  3. Step 3: Cross multiply
    139,639.79x = 192,699.11 × 75,976.22
  4. Step 4: Simplify right side
    139,639.79x = 14,640,548,631.79
  5. Step 5: Solve for x
    x = 14,640,548,631.79/139,639.79
  6. Step 6: Final answer
    x = 104,845.11

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1.5x scale

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.