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Finding the Fourth Proportional to 139,444.81, 192,433.75 and 75,782.62

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Solution

The fourth proportional to 139,444.81, 192,433.75 and 75,782.62 is: 104,579.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,444.81 : 192,433.75 = 75,782.62 : x
  2. Step 2: Convert to fraction form
    139,444.81/192,433.75 = 75,782.62/x
  3. Step 3: Cross multiply
    139,444.81x = 192,433.75 × 75,782.62
  4. Step 4: Simplify right side
    139,444.81x = 14,583,133,751.43
  5. Step 5: Solve for x
    x = 14,583,133,751.43/139,444.81
  6. Step 6: Final answer
    x = 104,579.97

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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.