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Finding the Fourth Proportional to 139,451.30, 192,444.28 and 75,789.10

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Solution

The fourth proportional to 139,451.30, 192,444.28 and 75,789.10 is: 104,589.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,451.30 : 192,444.28 = 75,789.10 : x
  2. Step 2: Convert to fraction form
    139,451.30/192,444.28 = 75,789.10/x
  3. Step 3: Cross multiply
    139,451.30x = 192,444.28 × 75,789.10
  4. Step 4: Simplify right side
    139,451.30x = 14,585,178,781.35
  5. Step 5: Solve for x
    x = 14,585,178,781.35/139,451.30
  6. Step 6: Final answer
    x = 104,589.77

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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.